I could bunk you could bunk she could bunk we could bunk you could bunk they could bunk
V-ing form
I could be bunking you could be bunking she could be bunking we could be bunking you could be bunking they could be bunking
Perfect
I could have bunked you could have bunked she could have bunked we could have bunked you could have bunked they could have bunked
V-ing perfect
I could have been bunking you could have been bunking she could have been bunking we could have been bunking you could have been bunking they could have been bunking
Negation
Simple form
I could not bunk you could not bunk she could not bunk we could not bunk you could not bunk they could not bunk
V-ing form
I could not be bunking you could not be bunking she could not be bunking we could not be bunking you could not be bunking they could not be bunking
Perfect
I could not have bunked you could not have bunked she could not have bunked we could not have bunked you could not have bunked they could not have bunked
V-ing perfect
I could not have been bunking you could not have been bunking she could not have been bunking we could not have been bunking you could not have been bunking they could not have been bunking
Interrogative form
Simple form
could I bunk? could you bunk? could she bunk? could we bunk? could you bunk? could they bunk?
V-ing form
could I be bunking? could you be bunking? could she be bunking? could we be bunking? could you be bunking? could they be bunking?
Perfect
could I have bunked? could you have bunked? could she have bunked? could we have bunked? could you have bunked? could they have bunked?
V-ing perfect
could I have been bunking? could you have been bunking? could she have been bunking? could we have been bunking? could you have been bunking? could they have been bunking?
Interro-negative form
Simple form
could I not bunk? could you not bunk? could she not bunk? could we not bunk? could you not bunk? could they not bunk?
V-ing form
could I not be bunking? could you not be bunking? could she not be bunking? could we not be bunking? could you not be bunking? could they not be bunking?
Perfect
could I not have bunked? could you not have bunked? could she not have bunked? could we not have bunked? could you not have bunked? could they not have bunked?
V-ing perfect
could I not have been bunking? could you not have been bunking? could she not have been bunking? could we not have been bunking? could you not have been bunking? could they not have been bunking?