I can unroll you can unroll he can unroll we can unroll you can unroll they can unroll
V-ing form
I can be unrolling you can be unrolling he can be unrolling we can be unrolling you can be unrolling they can be unrolling
Perfect
I can have unrolled you can have unrolled he can have unrolled we can have unrolled you can have unrolled they can have unrolled
V-ing perfect
I can have been unrolling you can have been unrolling he can have been unrolling we can have been unrolling you can have been unrolling they can have been unrolling
Negation
Simple form
I cannot unroll you cannot unroll he cannot unroll we cannot unroll you cannot unroll they cannot unroll
V-ing form
I cannot be unrolling you cannot be unrolling he cannot be unrolling we cannot be unrolling you cannot be unrolling they cannot be unrolling
Perfect
I cannot have unrolled you cannot have unrolled he cannot have unrolled we cannot have unrolled you cannot have unrolled they cannot have unrolled
V-ing perfect
I cannot have been unrolling you cannot have been unrolling he cannot have been unrolling we cannot have been unrolling you cannot have been unrolling they cannot have been unrolling
Interrogative form
Simple form
can I unroll? can you unroll? can he unroll? can we unroll? can you unroll? can they unroll?
V-ing form
can I be unrolling? can you be unrolling? can he be unrolling? can we be unrolling? can you be unrolling? can they be unrolling?
Perfect
can I have unrolled? can you have unrolled? can he have unrolled? can we have unrolled? can you have unrolled? can they have unrolled?
V-ing perfect
can I have been unrolling? can you have been unrolling? can he have been unrolling? can we have been unrolling? can you have been unrolling? can they have been unrolling?
Interro-negative form
Simple form
can I not unroll? can you not unroll? can he not unroll? can we not unroll? can you not unroll? can they not unroll?
V-ing form
can I not be unrolling? can you not be unrolling? can he not be unrolling? can we not be unrolling? can you not be unrolling? can they not be unrolling?
Perfect
can I not have unrolled? can you not have unrolled? can he not have unrolled? can we not have unrolled? can you not have unrolled? can they not have unrolled?
V-ing perfect
can I not have been unrolling? can you not have been unrolling? can he not have been unrolling? can we not have been unrolling? can you not have been unrolling? can they not have been unrolling?