English verb conjugation
COULD DEPLANE

Regular verb: deplane - deplaned - deplaned

Affirmation

Simple form	V-ing form
I could deplane you could deplane he could deplane we could deplane you could deplane they could deplane	I could be deplaning you could be deplaning he could be deplaning we could be deplaning you could be deplaning they could be deplaning
Perfect	V-ing perfect
I could have deplaned you could have deplaned he could have deplaned we could have deplaned you could have deplaned they could have deplaned	I could have been deplaning you could have been deplaning he could have been deplaning we could have been deplaning you could have been deplaning they could have been deplaning

Negation

Simple form	V-ing form
I could not deplane you could not deplane he could not deplane we could not deplane you could not deplane they could not deplane	I could not be deplaning you could not be deplaning he could not be deplaning we could not be deplaning you could not be deplaning they could not be deplaning
Perfect	V-ing perfect
I could not have deplaned you could not have deplaned he could not have deplaned we could not have deplaned you could not have deplaned they could not have deplaned	I could not have been deplaning you could not have been deplaning he could not have been deplaning we could not have been deplaning you could not have been deplaning they could not have been deplaning

Interrogative form

Simple form	V-ing form
could I deplane? could you deplane? could he deplane? could we deplane? could you deplane? could they deplane?	could I be deplaning? could you be deplaning? could he be deplaning? could we be deplaning? could you be deplaning? could they be deplaning?
Perfect	V-ing perfect
could I have deplaned? could you have deplaned? could he have deplaned? could we have deplaned? could you have deplaned? could they have deplaned?	could I have been deplaning? could you have been deplaning? could he have been deplaning? could we have been deplaning? could you have been deplaning? could they have been deplaning?

Interro-negative form

Simple form	V-ing form
could I not deplane? could you not deplane? could he not deplane? could we not deplane? could you not deplane? could they not deplane?	could I not be deplaning? could you not be deplaning? could he not be deplaning? could we not be deplaning? could you not be deplaning? could they not be deplaning?
Perfect	V-ing perfect
could I not have deplaned? could you not have deplaned? could he not have deplaned? could we not have deplaned? could you not have deplaned? could they not have deplaned?	could I not have been deplaning? could you not have been deplaning? could he not have been deplaning? could we not have been deplaning? could you not have been deplaning? could they not have been deplaning?