English verb conjugation
COULD UNFREEZE

Regular verb: unfreeze - unfreezed - unfreezed

Affirmation

Simple form	V-ing form
I could unfreeze you could unfreeze he could unfreeze we could unfreeze you could unfreeze they could unfreeze	I could be unfreezing you could be unfreezing he could be unfreezing we could be unfreezing you could be unfreezing they could be unfreezing
Perfect	V-ing perfect
I could have unfreezed you could have unfreezed he could have unfreezed we could have unfreezed you could have unfreezed they could have unfreezed	I could have been unfreezing you could have been unfreezing he could have been unfreezing we could have been unfreezing you could have been unfreezing they could have been unfreezing

Negation

Simple form	V-ing form
I couldn't unfreeze you couldn't unfreeze he couldn't unfreeze we couldn't unfreeze you couldn't unfreeze they couldn't unfreeze	I couldn't be unfreezing you couldn't be unfreezing he couldn't be unfreezing we couldn't be unfreezing you couldn't be unfreezing they couldn't be unfreezing
Perfect	V-ing perfect
I couldn't have unfreezed you couldn't have unfreezed he couldn't have unfreezed we couldn't have unfreezed you couldn't have unfreezed they couldn't have unfreezed	I couldn't have been unfreezing you couldn't have been unfreezing he couldn't have been unfreezing we couldn't have been unfreezing you couldn't have been unfreezing they couldn't have been unfreezing

Interrogative form

Simple form	V-ing form
could I unfreeze? could you unfreeze? could he unfreeze? could we unfreeze? could you unfreeze? could they unfreeze?	could I be unfreezing? could you be unfreezing? could he be unfreezing? could we be unfreezing? could you be unfreezing? could they be unfreezing?
Perfect	V-ing perfect
could I have unfreezed? could you have unfreezed? could he have unfreezed? could we have unfreezed? could you have unfreezed? could they have unfreezed?	could I have been unfreezing? could you have been unfreezing? could he have been unfreezing? could we have been unfreezing? could you have been unfreezing? could they have been unfreezing?

Interro-negative form

Simple form	V-ing form
couldn't I unfreeze? couldn't you unfreeze? couldn't he unfreeze? couldn't we unfreeze? couldn't you unfreeze? couldn't they unfreeze?	couldn't I be unfreezing? couldn't you be unfreezing? couldn't he be unfreezing? couldn't we be unfreezing? couldn't you be unfreezing? couldn't they be unfreezing?
Perfect	V-ing perfect
couldn't I have unfreezed? couldn't you have unfreezed? couldn't he have unfreezed? couldn't we have unfreezed? couldn't you have unfreezed? couldn't they have unfreezed?	couldn't I have been unfreezing? couldn't you have been unfreezing? couldn't he have been unfreezing? couldn't we have been unfreezing? couldn't you have been unfreezing? couldn't they have been unfreezing?