Plural: a common sights
a cock-and-bull story · a-cock-horse · acold · a cold comfort · acology · acolyte · acolythist · acometida · acomia · a common sight · a complete swindle · Aconcagua · acone · aconite · aconitine · Aconitum · Aconitum napellus · aconitum vulparia · a considerable amount · acool