English verb conjugation
COULD DIAPAUSE

Regular verb: diapause - diapaused - diapaused

Affirmation

Simple form	V-ing form
I could diapause you could diapause he could diapause we could diapause you could diapause they could diapause	I could be diapausing you could be diapausing he could be diapausing we could be diapausing you could be diapausing they could be diapausing
Perfect	V-ing perfect
I could have diapaused you could have diapaused he could have diapaused we could have diapaused you could have diapaused they could have diapaused	I could have been diapausing you could have been diapausing he could have been diapausing we could have been diapausing you could have been diapausing they could have been diapausing

Negation

Simple form	V-ing form
I couldn't diapause you couldn't diapause he couldn't diapause we couldn't diapause you couldn't diapause they couldn't diapause	I couldn't be diapausing you couldn't be diapausing he couldn't be diapausing we couldn't be diapausing you couldn't be diapausing they couldn't be diapausing
Perfect	V-ing perfect
I couldn't have diapaused you couldn't have diapaused he couldn't have diapaused we couldn't have diapaused you couldn't have diapaused they couldn't have diapaused	I couldn't have been diapausing you couldn't have been diapausing he couldn't have been diapausing we couldn't have been diapausing you couldn't have been diapausing they couldn't have been diapausing

Interrogative form

Simple form	V-ing form
could I diapause? could you diapause? could he diapause? could we diapause? could you diapause? could they diapause?	could I be diapausing? could you be diapausing? could he be diapausing? could we be diapausing? could you be diapausing? could they be diapausing?
Perfect	V-ing perfect
could I have diapaused? could you have diapaused? could he have diapaused? could we have diapaused? could you have diapaused? could they have diapaused?	could I have been diapausing? could you have been diapausing? could he have been diapausing? could we have been diapausing? could you have been diapausing? could they have been diapausing?

Interro-negative form

Simple form	V-ing form
couldn't I diapause? couldn't you diapause? couldn't he diapause? couldn't we diapause? couldn't you diapause? couldn't they diapause?	couldn't I be diapausing? couldn't you be diapausing? couldn't he be diapausing? couldn't we be diapausing? couldn't you be diapausing? couldn't they be diapausing?
Perfect	V-ing perfect
couldn't I have diapaused? couldn't you have diapaused? couldn't he have diapaused? couldn't we have diapaused? couldn't you have diapaused? couldn't they have diapaused?	couldn't I have been diapausing? couldn't you have been diapausing? couldn't he have been diapausing? couldn't we have been diapausing? couldn't you have been diapausing? couldn't they have been diapausing?