English verb conjugation
COULD UNBOTTLE

Regular verb: unbottle - unbottled - unbottled

Affirmation

Simple form	V-ing form
I could unbottle you could unbottle he could unbottle we could unbottle you could unbottle they could unbottle	I could be unbottling you could be unbottling he could be unbottling we could be unbottling you could be unbottling they could be unbottling
Perfect	V-ing perfect
I could have unbottled you could have unbottled he could have unbottled we could have unbottled you could have unbottled they could have unbottled	I could have been unbottling you could have been unbottling he could have been unbottling we could have been unbottling you could have been unbottling they could have been unbottling

Negation

Simple form	V-ing form
I could not unbottle you could not unbottle he could not unbottle we could not unbottle you could not unbottle they could not unbottle	I could not be unbottling you could not be unbottling he could not be unbottling we could not be unbottling you could not be unbottling they could not be unbottling
Perfect	V-ing perfect
I could not have unbottled you could not have unbottled he could not have unbottled we could not have unbottled you could not have unbottled they could not have unbottled	I could not have been unbottling you could not have been unbottling he could not have been unbottling we could not have been unbottling you could not have been unbottling they could not have been unbottling

Interrogative form

Simple form	V-ing form
could I unbottle? could you unbottle? could he unbottle? could we unbottle? could you unbottle? could they unbottle?	could I be unbottling? could you be unbottling? could he be unbottling? could we be unbottling? could you be unbottling? could they be unbottling?
Perfect	V-ing perfect
could I have unbottled? could you have unbottled? could he have unbottled? could we have unbottled? could you have unbottled? could they have unbottled?	could I have been unbottling? could you have been unbottling? could he have been unbottling? could we have been unbottling? could you have been unbottling? could they have been unbottling?

Interro-negative form

Simple form	V-ing form
could I not unbottle? could you not unbottle? could he not unbottle? could we not unbottle? could you not unbottle? could they not unbottle?	could I not be unbottling? could you not be unbottling? could he not be unbottling? could we not be unbottling? could you not be unbottling? could they not be unbottling?
Perfect	V-ing perfect
could I not have unbottled? could you not have unbottled? could he not have unbottled? could we not have unbottled? could you not have unbottled? could they not have unbottled?	could I not have been unbottling? could you not have been unbottling? could he not have been unbottling? could we not have been unbottling? could you not have been unbottling? could they not have been unbottling?