English verb conjugation
COULD UNFOLC

Regular verb: unfolc - unfolced - unfolced

Affirmation

Simple form	V-ing form
I could unfolc you could unfolc he could unfolc we could unfolc you could unfolc they could unfolc	I could be unfolcing you could be unfolcing he could be unfolcing we could be unfolcing you could be unfolcing they could be unfolcing
Perfect	V-ing perfect
I could have unfolced you could have unfolced he could have unfolced we could have unfolced you could have unfolced they could have unfolced	I could have been unfolcing you could have been unfolcing he could have been unfolcing we could have been unfolcing you could have been unfolcing they could have been unfolcing

Negation

Simple form	V-ing form
I couldn't unfolc you couldn't unfolc he couldn't unfolc we couldn't unfolc you couldn't unfolc they couldn't unfolc	I couldn't be unfolcing you couldn't be unfolcing he couldn't be unfolcing we couldn't be unfolcing you couldn't be unfolcing they couldn't be unfolcing
Perfect	V-ing perfect
I couldn't have unfolced you couldn't have unfolced he couldn't have unfolced we couldn't have unfolced you couldn't have unfolced they couldn't have unfolced	I couldn't have been unfolcing you couldn't have been unfolcing he couldn't have been unfolcing we couldn't have been unfolcing you couldn't have been unfolcing they couldn't have been unfolcing

Interrogative form

Simple form	V-ing form
could I unfolc? could you unfolc? could he unfolc? could we unfolc? could you unfolc? could they unfolc?	could I be unfolcing? could you be unfolcing? could he be unfolcing? could we be unfolcing? could you be unfolcing? could they be unfolcing?
Perfect	V-ing perfect
could I have unfolced? could you have unfolced? could he have unfolced? could we have unfolced? could you have unfolced? could they have unfolced?	could I have been unfolcing? could you have been unfolcing? could he have been unfolcing? could we have been unfolcing? could you have been unfolcing? could they have been unfolcing?

Interro-negative form

Simple form	V-ing form
couldn't I unfolc? couldn't you unfolc? couldn't he unfolc? couldn't we unfolc? couldn't you unfolc? couldn't they unfolc?	couldn't I be unfolcing? couldn't you be unfolcing? couldn't he be unfolcing? couldn't we be unfolcing? couldn't you be unfolcing? couldn't they be unfolcing?
Perfect	V-ing perfect
couldn't I have unfolced? couldn't you have unfolced? couldn't he have unfolced? couldn't we have unfolced? couldn't you have unfolced? couldn't they have unfolced?	couldn't I have been unfolcing? couldn't you have been unfolcing? couldn't he have been unfolcing? couldn't we have been unfolcing? couldn't you have been unfolcing? couldn't they have been unfolcing?