Simple categories matching irregular:

• shelter,
• item,
• surface,
• shape,
• organ,
• motion,
• display,
• part,
• work,
• polygon,
• original,
• condition,
• connection,
• pattern,
• object,
• program,
• area,
• ground,
• set,
• form,
• interval,
• period,
• phenomenon,
• expense,
• use,
• event,
• material,
• hours,
• place,
• week,
• structure,
• cell,
• array,
• wall,
• line,
• soil,
• road,
• commodity,
• astigmatism,
• occurrence,
• asterism,
• body,
• light,
• boundary,
• system,
• border,
• job,
• particle,
• profile,
• holiday,
• substrate,
• payment,
• unit,
• space,
• terrain,
• edge,
• component,
• flower,
• feature,
• activity,
• odor,
• obstruction,
• organization,
• curve,
• dust,
• behavior,
• solid,

Members with property irregular:

• circle,
• lignite,
• traffic,
• triangle,
• slate,
• stone,
• rough_slope,
• pipe,
• movie_production,
• human_hand,
• curved_line,
• hexagon,
• rough_wood,
• curved_fender,
• big_stick,
• pentagon,
• pin_punch,
• valve,
• corner,
• cash_payment,
• irregular_form,
• optional_expense,
• larger_body,
• grout_line,
• random_array,
• result,
• bridge_column,
• demonstration_lesson,
• garden,
• cant,
• deviation,
• octagon,
• weekend_hours,
• spigot_joint,
• church,
• cloud,
• winding_stream,
• earthquake,
• lottery_earnings,
• stair_steps,
• wicker,
• bright_line,
• various_pill,
• ornament,
• brick,
• button,
• tree_crown,
• political_boundary,
• road_crown,
• weekend,
• coral,
• film_viewing,
• curtain_rod,
• brick_surface,
• os,
• cylinder_vase,
• merger,
• wire_passage,
• home_maintenance,
• coil,
• stairs,
• sample_edge,
• bonus,
• chain_fold,
• crash,
• coupling,
• late_shift,
• holiday,
• book,
• land_dispute,
• grassy_surface,
• baseball,
• crime,
• steady_prussian,
• elbow,
• syrinx,
• place,
• curb,
• special_pipe,
• apple,
• stock-option_exercise,
• tube,
• foot,
• light_switch,
• abrasive_grit,
• volumetric_flask,
• pointed_star,
• training,
• glass_fragment,
• home_guard,
• small_satellite,
• small_folder,
• harvest_period,
• nonlinear_movement,
• potato_shape,
• timber,
• cylinder,
• straight_line,
• bulbous_bow,
• open_book,
• trauma_case,
• cardboard_carton,
• effect,
• tetrapod,
• niche,
• canoe,
• deformation,
• round_log,
• pea,
• plastic_sheeting,
• night,
• wall_roughness,
• seam,
• service_tee,
• human_figure,
• heart_shape,
• school_building,
• biological_specimen,
• furniture_legs,
• ion_cloud,
• tree_trimmings,
• population_census,
• cable_support,
• ploughed_soil,
• crown_molding,
• laundering,
• log,
• fitting_material,
• chord,
• grill,
• crisis,
• door_jamb,
• odd_job,
• close_pair,
• ore_body,
• character_skin,
• repair,
• respiration,
• sunday,
• fitting,
• quadrilateral,
• distal_radius,
• face_motion,
• urban_boundary,
• rough_concrete,
• mountain,
• stucco,
• fractal,
• growth,
• maintenance,
• swamp,
• car,
• volcanic_ash,
• wing_joint,
• head,
• position_balance,
• pencil,
• tube_break,
• placenta,
• talc,
• comet,
• curved_area,
• pension,
• chair,
• major_shift,
• flash,
• speed_ramp,
• agricultural_labour,
• mail_parcel,
• muddy_ground,
• uneven_brick,
• canvas,
• indoor_light,
• cobblestone,
• skylight,
• gravel,
• fence,
• outsized_freight,
• aluminium_door,
• human_skeleton,
• induction_event,
• narrow_cavity,
• turbine_blade,
• plant,
• maximum_diameter,
• carpeting,
• traffic_accident,
• tiled_wall,
• spiral_feature,
• small_box,
• saturday,
• sand_grain,
• large_nose,
• peanuts,
• wine_glasses,
• acute_edge,
• airplane,
• figure,
• human_limb,
• pharmaceutical_material,
• lamp,
• dry_season,
• white_company,
• windows,
• large_area,
• paramilitary,
• balcony_face,
• iron_casting,
• snow,
• wash,
• granular_material,
• coffer,
• road_feature,
• moulding,
• prussian,
• round_helmet,
• hidden_words,
• tree,
• theft,
• cup,
• soft_terrain,
• wooden_stick,
• pipe_flange,
• rag,
• extreme_deviation,
• heating,
• earth,
• rotation,
• retroactive_pay,
• sporting_event,
• array,
• baseball-game_program,
• shoes,
• census_eds,
• tee,
• dentist,
• percolation,
• convoluted_line,
• grain_boundary,
• shore_line,
• ground_surface,
• national_election,
• pocket,
• volunteer_work,
• indian,
• bark,
• forest_canopy,
• algerian,
• discretionary_bonus,
• hemisphere,
• fender,
• robbery,
• ball,
• cardboard,
• crook,
• horseshoe_pattern,
• stomach,
• ribbon,
• eclipse,
• rubber_sheet,
• toilet,
• woven_fabric,
• domain_structure,
• chamfer,
• vent,
• brain_cast,
• filament,
• flange,
• eroded_area,
• asian_dust,
• mouth,
• dancing,
• alcoholism,
• pond,
• singing,
• kerb,
• older_carton,
• light,
• plaster,
• rice_grain,
• national_holiday,
• plural,
• heart,
• plastic_tubing,
• burn_pattern,
• ellipsoid_curve,
• fifty_kilometer,
• flint,
• star_shape,
• postal_mail,
• barrels,
• wire_mesh,
• planet,
• coastal_region,
• raw_log,
• large_size,
• alteration,
• diamond,
• commission,
• regular_dust,
• iron_powder,
• magazine,
• joint,
• cell,
• overtime_pay,
• large_ear,
• plywood,
• ramp,
• hand,
• consecutive_surface,
• hollow,
• overtime_allowance,
• web_space,
• deck,
• fresh_fruit,
• incentive_bonus,
• steps,
• person,
• furniture,
• neck_area,
• pencil_vase,
• tile,
• fax,
• miracle,
• fruit_cake,
• manufactured_diffusor,
• archeological_specimen,
• trapezoid,
• oval,
• car_body,
• concert,
• seizure,
• cell_body,
• bean,
• high_chair,
• breakdown,
• tubing,
• box,
• hold,
• door,
• coastline,
• coast_line,
• bay,
• motorcycle_tank,
• sharp_edge,
• building_product,
• bookshelf,
• drum,
• collision,
• curved_wall,
• small_appliance,
• bead_molding,
• bulge,
• shift,
• boulder,
• mouse,
• root-canal_ramification,
• loop,
• newsprint,
• powder,
• holiday_bonus,
• fire,
• vellum,
• property-tax_payment,
• incentive_compensation,
• upholstery,
• subclinical_keratoconus,
• yard,
• car_maintenance,
• web,
• fiber,
• textured_wall,
• bankruptcy,
• ink_pen,
• auditorium_program,
• bush_fire,
• busbar,
• keratin_fiber,
• thermoplastic_bottle,
• patio_furniture,
• easter,
• brickwork,
• apical_delta,
• rough_surface,
• old_closure,
• thunderstorm,
• wooden_object,
• lightning_bolt,
• hill,
• minefield,
• microprocessor,
• aircraft_exterior,
• branch,
• straw,
• roof,
• road_ditch,
• network,
• doorjamb,
• trellis,
• maritime_terrain,
• motor-vehicle_body,
• early_morning,
• cabinet,
• lampshade,
• newspaper,
• fillet,
• court_light,
• typhoon,
• free_curve,
• mountain_profile,
• brain,
• insect,
• ore,
• square,
• bottle,
• court_appearance,
• rock_joint,
• ogee_profile,
• wavy_line,
• cracking,
• brush,
• house_maintenance,
• pilaster,
• huge_column,
• crack,
• foam_roof,
• vacation_expense,
• existing_timber,
• escarpment,
• scene_change,
• finger,
• stucco_wall,
• relief,
• scalloped_edge,
• valve_body,
• long_size,
• lumpy_import,
• babysitting,
• ship,
• glass_aggregate,
• panel_line,
• sandy_ground,
• edge,
• helicopter,
• major_arc,
• city_skyline,
• radius,
• gun_shot,
• trigger,
• horizontal_seam,
• leaf,
• helmet,
• textured_ceiling,
• pear,
• labour,
• asteroid,
• construction_activity,
• evening,
• building,
• door_hinge,
• accident,
• proximity_card,
• curtain,
• sphere,
• marl_clod,
• ground,
• brick_wall,
• terrain,
• pit,
• textile,
• skin,
• helmet_cell,
• crib,
• cossack,
• steel_fragment,
• hippocampus,
• ditch,
• block_wall,
• clay,
• random_coil,
• ranger,
• concrete,
• vehicle,
• registration,
• mechanical_system,
• new_concrete,
• tongue,
• masonry,
• vermicular_pattern,
• nose,
• various_allowance,
• line,
• silica,
• character_model,
• inside_corner,
• model,
• wood,
• broccoli_head,
• split_block,
• ridge,
• rectangle,
• turbine,
• nook,
• drywall,
• rock,
• residual_limb,
• ladder,
• shovel,
• strip,
• root,
• wood_log,
• sweep,
• welfare_payment,
• full_moon,
• cloth,
• sophisticated_sculpture,
• aircraft,
• curved_moulding,
• loess,
• wall,
• variable_shift,
• statue,
• oval_profile,
• large_bolt,
• round_cup,
• colorful_cossack,
• terrorism,
• coke,
• gravel_road,
• shield,
• deep_corner,
• cable,
• ocean_wave,
• expense,
• gear,
• uterus,
• curve,
• tree_foliage,
• loose_paper,
• influenza_epidemic,
• rounded_edge,
• canadian_scout,
• eyes,
• oscillation,
• diaper,
• snow_road,
• carpet,
• parallelogram,
• corn,
• asbestos,
• keratoconus,
• mica,
• large_withdrawal,
• terrace,
• hands,
• smart_card,
• organized_crime,
• drought,
• roof_vent,
• hammer,
• ceiling,
• string,
• potato,
• meteor,
• sanitary_napkin,
• house_repair,
• deck_material,
• tidal_structure,
• overtime,
• mud,
• aikido_course,
• breast,
• heavy_cardboard,
• human_brain,
• sawtooth_edge,
• run,
• protein_structure,
• thick_carpet,
• neuron,
• pillow,
• medical_expense,
• alumina,
• porous_material,
• heel,
• rock_wall,
• unpainted_wood,
• coffee,
• chain_end,
• paved_area,
• tomato,
• vehicle_side,
• flood,
• dock_labour,
• concrete_block,
• biomass_material,
• brick_fireplace,
• random_movement,
• house_siding,
• fabric,
• christmas_ornament,
• power_loss,
• incomplete_setup,
• casting,
• parttime_job,
• nanotube,
• blurred_edge,
• island,
• bush,