I can tuck you can tuck he can tuck we can tuck you can tuck they can tuck
V-ing form
I can be tucking you can be tucking he can be tucking we can be tucking you can be tucking they can be tucking
Perfect
I can have tucked you can have tucked he 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 he can have been tucking we can have been tucking you can have been tucking they can have been tucking
Negation
Simple form
I can't tuck you can't tuck he can't tuck we can't tuck you can't tuck they can't tuck
V-ing form
I can't be tucking you can't be tucking he can't be tucking we can't be tucking you can't be tucking they can't be tucking
Perfect
I can't have tucked you can't have tucked he can't have tucked we can't have tucked you can't have tucked they can't have tucked
V-ing perfect
I can't have been tucking you can't have been tucking he can't have been tucking we can't have been tucking you can't have been tucking they can't have been tucking
Interrogative form
Simple form
can I tuck? can you tuck? can he tuck? can we tuck? can you tuck? can they tuck?
V-ing form
can I be tucking? can you be tucking? can he be tucking? can we be tucking? can you be tucking? can they be tucking?
Perfect
can I have tucked? can you have tucked? can he 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 he have been tucking? can we have been tucking? can you have been tucking? can they have been tucking?
Interro-negative form
Simple form
can't I tuck? can't you tuck? can't he tuck? can't we tuck? can't you tuck? can't they tuck?
V-ing form
can't I be tucking? can't you be tucking? can't he be tucking? can't we be tucking? can't you be tucking? can't they be tucking?
Perfect
can't I have tucked? can't you have tucked? can't he have tucked? can't we have tucked? can't you have tucked? can't they have tucked?
V-ing perfect
can't I have been tucking? can't you have been tucking? can't he have been tucking? can't we have been tucking? can't you have been tucking? can't they have been tucking?