English verb conjugation
COULD LANGUISH

Regular verb: languish - languished - languished

Affirmation

Simple form	V-ing form
I could languish you could languish he could languish we could languish you could languish they could languish	I could be languishing you could be languishing he could be languishing we could be languishing you could be languishing they could be languishing
Perfect	V-ing perfect
I could have languished you could have languished he could have languished we could have languished you could have languished they could have languished	I could have been languishing you could have been languishing he could have been languishing we could have been languishing you could have been languishing they could have been languishing

Negation

Simple form	V-ing form
I couldn't languish you couldn't languish he couldn't languish we couldn't languish you couldn't languish they couldn't languish	I couldn't be languishing you couldn't be languishing he couldn't be languishing we couldn't be languishing you couldn't be languishing they couldn't be languishing
Perfect	V-ing perfect
I couldn't have languished you couldn't have languished he couldn't have languished we couldn't have languished you couldn't have languished they couldn't have languished	I couldn't have been languishing you couldn't have been languishing he couldn't have been languishing we couldn't have been languishing you couldn't have been languishing they couldn't have been languishing

Interrogative form

Simple form	V-ing form
could I languish? could you languish? could he languish? could we languish? could you languish? could they languish?	could I be languishing? could you be languishing? could he be languishing? could we be languishing? could you be languishing? could they be languishing?
Perfect	V-ing perfect
could I have languished? could you have languished? could he have languished? could we have languished? could you have languished? could they have languished?	could I have been languishing? could you have been languishing? could he have been languishing? could we have been languishing? could you have been languishing? could they have been languishing?

Interro-negative form

Simple form	V-ing form
couldn't I languish? couldn't you languish? couldn't he languish? couldn't we languish? couldn't you languish? couldn't they languish?	couldn't I be languishing? couldn't you be languishing? couldn't he be languishing? couldn't we be languishing? couldn't you be languishing? couldn't they be languishing?
Perfect	V-ing perfect
couldn't I have languished? couldn't you have languished? couldn't he have languished? couldn't we have languished? couldn't you have languished? couldn't they have languished?	couldn't I have been languishing? couldn't you have been languishing? couldn't he have been languishing? couldn't we have been languishing? couldn't you have been languishing? couldn't they have been languishing?