List: noun or participle which takes the aux. verb suru

noun  noun (generic)  noun or participle taking the aux. verb する  intransitive verb 

• sudden decrease

noun  noun (generic)  noun or participle taking the aux. verb する  transitive verb 

• urgent report, urgent message

noun  noun (generic)  noun or participle taking the aux. verb する 

• water supply and drainage

noun  noun (generic)  noun or participle taking the aux. verb する  transitive verb  intransitive verb 

• supplying electricity

noun  noun (generic)  noun or participle taking the aux. verb する  transitive verb 

• maintaining (e.g. a family), support
• sustaining (an army), supplying (troops and horses) with provisions

yojijukugo  noun  noun (generic)  noun or participle taking the aux. verb する 

• behind-the-scenes maneuvering, behind-the-scenes manoeuvering, secret maneuvers, secret manoeuvres

search-only kanji form  noun  noun (generic)  noun or participle taking the aux. verb する  transitive verb 

• attack under the cover of darkness
• surprise attack, sneak attack

irregular okurigana  noun  noun (generic)  noun or participle taking the aux. verb する 

• black-market dealings, underhand transactions, shady trading, illegal trade
• secret dealings, secret arrangement

noun  noun (generic)  noun or participle taking the aux. verb する  intransitive verb 

• countersuit

obsolete kanji  noun  noun (generic)  noun or participle taking the aux. verb する 

• responding to a demand, answering a request