I can tuck you can tuck she can tuck we can tuck you can tuck they can tuck
V-ing form
I can be tucking you can be tucking she can be tucking we can be tucking you can be tucking they can be tucking
Perfect
I can have tucked you can have tucked she can have tucked we can have tucked you can have tucked they can have tucked
V-ing perfect
I can have been tucking you can have been tucking she can have been tucking we can have been tucking you can have been tucking they can have been tucking
Negation
Simple form
I cannot tuck you cannot tuck she cannot tuck we cannot tuck you cannot tuck they cannot tuck
V-ing form
I cannot be tucking you cannot be tucking she cannot be tucking we cannot be tucking you cannot be tucking they cannot be tucking
Perfect
I cannot have tucked you cannot have tucked she cannot have tucked we cannot have tucked you cannot have tucked they cannot have tucked
V-ing perfect
I cannot have been tucking you cannot have been tucking she cannot have been tucking we cannot have been tucking you cannot have been tucking they cannot have been tucking
Interrogative form
Simple form
can I tuck? can you tuck? can she tuck? can we tuck? can you tuck? can they tuck?
V-ing form
can I be tucking? can you be tucking? can she be tucking? can we be tucking? can you be tucking? can they be tucking?
Perfect
can I have tucked? can you have tucked? can she have tucked? can we have tucked? can you have tucked? can they have tucked?
V-ing perfect
can I have been tucking? can you have been tucking? can she have been tucking? can we have been tucking? can you have been tucking? can they have been tucking?
Interro-negative form
Simple form
can I not tuck? can you not tuck? can she not tuck? can we not tuck? can you not tuck? can they not tuck?
V-ing form
can I not be tucking? can you not be tucking? can she not be tucking? can we not be tucking? can you not be tucking? can they not be tucking?
Perfect
can I not have tucked? can you not have tucked? can she not have tucked? can we not have tucked? can you not have tucked? can they not have tucked?
V-ing perfect
can I not have been tucking? can you not have been tucking? can she not have been tucking? can we not have been tucking? can you not have been tucking? can they not have been tucking?