Simple categories matching frequent:

• payment,
• expense,
• condition,
• activity,
• outing,

Members with property frequent:

• swimming,
• choir_practice,
• theatre,
• mountain_hike,
• homework,
• seminar,
• fishing,
• outing,
• internet_surfing,
• museum_planning,
• camping,
• ordering,
• graph_drawing,
• cooking,
• circuit,
• transportation,
• heating,
• ski_trip,
• medical_payment,
• electricity_production,
• drinking,
• camping_trip,
• bladder_infection,
• shopping,
• confrontation,
• rent,
• filter_replacement,
• bathing,
• cultural_event,
• internal_cleaning,
• reference,
• wages,