Modifiers matching investigation:

• special,
• complex,
• diagnostic,
• social,
• cardiac,
• environmental,
• extensive,
• cellular,
• complementary,
• specialized,
• necessary,
• technical,
• clinical,
• under,
• expensive,
• radiological,
• medical,
• detailed,
• chromosomal,
• important,
• federal,
• demanding,
• invasive,
• scholarly,
• minor,
• supplemental,
• scientific,
• spatial,
• intrusive,
• criminal,
• gastrointestinal,
• endoscopic,
• formal,
• haematological,
• basic,
• out,
• instrumental,
• governmental,
• preoperative,
• costly,
• molecular,
• simple,
• major,
• geologic,
• common,
• routine,
• official,
• recent,
• essential,
• additional,
• appropriate,
• compulsory,
• gi,
• administrative,
• painful,
• departmental,
• regulatory,
• good,
• archaeological,
• surgical,
• current,
• empirical,
• legal,
• specialised,
• forensic,
• explicit,
• experimental,
• relevant,

Simple categories matching demanding:

• discipline,
• activity,
• sport,
• condition,
• trade,
• plant,
• subject,
• energy,
• profession,
• vessel,
• process,
• tree,
• animal,
• occupation,
• charge,
• application,
• investigation,
• pastime,
• game,
• surface,
• job,
• content,
• service,
• food,
• task,
• state,
• situation,
• environment,
• duty,
• behavior,
• industry,
• system,
• instrument,
• event,
• pursuit,
• labor,
• work,
• sector,
• skill,
• program,
• device,
• employment,
• topic,
• market,
• career,