I can bunk you can bunk he can bunk we can bunk you can bunk they can bunk
V-ing form
I can be bunking you can be bunking he can be bunking we can be bunking you can be bunking they can be bunking
Perfect
I can have bunked you can have bunked he can have bunked we can have bunked you can have bunked they can have bunked
V-ing perfect
I can have been bunking you can have been bunking he can have been bunking we can have been bunking you can have been bunking they can have been bunking
Negation
Simple form
I can't bunk you can't bunk he can't bunk we can't bunk you can't bunk they can't bunk
V-ing form
I can't be bunking you can't be bunking he can't be bunking we can't be bunking you can't be bunking they can't be bunking
Perfect
I can't have bunked you can't have bunked he can't have bunked we can't have bunked you can't have bunked they can't have bunked
V-ing perfect
I can't have been bunking you can't have been bunking he can't have been bunking we can't have been bunking you can't have been bunking they can't have been bunking
Interrogative form
Simple form
can I bunk? can you bunk? can he bunk? can we bunk? can you bunk? can they bunk?
V-ing form
can I be bunking? can you be bunking? can he be bunking? can we be bunking? can you be bunking? can they be bunking?
Perfect
can I have bunked? can you have bunked? can he have bunked? can we have bunked? can you have bunked? can they have bunked?
V-ing perfect
can I have been bunking? can you have been bunking? can he have been bunking? can we have been bunking? can you have been bunking? can they have been bunking?
Interro-negative form
Simple form
can't I bunk? can't you bunk? can't he bunk? can't we bunk? can't you bunk? can't they bunk?
V-ing form
can't I be bunking? can't you be bunking? can't he be bunking? can't we be bunking? can't you be bunking? can't they be bunking?
Perfect
can't I have bunked? can't you have bunked? can't he have bunked? can't we have bunked? can't you have bunked? can't they have bunked?
V-ing perfect
can't I have been bunking? can't you have been bunking? can't he have been bunking? can't we have been bunking? can't you have been bunking? can't they have been bunking?