English verb conjugation
COULD UNROLL

Regular verb: unroll - unrolled - unrolled

Affirmation

Simple form	V-ing form
I could unroll you could unroll he could unroll we could unroll you could unroll they could unroll	I could be unrolling you could be unrolling he could be unrolling we could be unrolling you could be unrolling they could be unrolling
Perfect	V-ing perfect
I could have unrolled you could have unrolled he could have unrolled we could have unrolled you could have unrolled they could have unrolled	I could have been unrolling you could have been unrolling he could have been unrolling we could have been unrolling you could have been unrolling they could have been unrolling

Negation

Simple form	V-ing form
I couldn't unroll you couldn't unroll he couldn't unroll we couldn't unroll you couldn't unroll they couldn't unroll	I couldn't be unrolling you couldn't be unrolling he couldn't be unrolling we couldn't be unrolling you couldn't be unrolling they couldn't be unrolling
Perfect	V-ing perfect
I couldn't have unrolled you couldn't have unrolled he couldn't have unrolled we couldn't have unrolled you couldn't have unrolled they couldn't have unrolled	I couldn't have been unrolling you couldn't have been unrolling he couldn't have been unrolling we couldn't have been unrolling you couldn't have been unrolling they couldn't have been unrolling

Interrogative form

Simple form	V-ing form
could I unroll? could you unroll? could he unroll? could we unroll? could you unroll? could they unroll?	could I be unrolling? could you be unrolling? could he be unrolling? could we be unrolling? could you be unrolling? could they be unrolling?
Perfect	V-ing perfect
could I have unrolled? could you have unrolled? could he have unrolled? could we have unrolled? could you have unrolled? could they have unrolled?	could I have been unrolling? could you have been unrolling? could he have been unrolling? could we have been unrolling? could you have been unrolling? could they have been unrolling?

Interro-negative form

Simple form	V-ing form
couldn't I unroll? couldn't you unroll? couldn't he unroll? couldn't we unroll? couldn't you unroll? couldn't they unroll?	couldn't I be unrolling? couldn't you be unrolling? couldn't he be unrolling? couldn't we be unrolling? couldn't you be unrolling? couldn't they be unrolling?
Perfect	V-ing perfect
couldn't I have unrolled? couldn't you have unrolled? couldn't he have unrolled? couldn't we have unrolled? couldn't you have unrolled? couldn't they have unrolled?	couldn't I have been unrolling? couldn't you have been unrolling? couldn't he have been unrolling? couldn't we have been unrolling? couldn't you have been unrolling? couldn't they have been unrolling?