could bunk
Regular verb: bunk - bunked- bunked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could bunk
you could bunk
he could bunk
we could bunk
you could bunk
they could bunk 	I could be bunking
you could be bunking
he could be bunking
we could be bunking
you could be bunking
they could be bunking	I could have bunked
you could have bunked
he could have bunked
we could have bunked
you could have bunked
they could have bunked	I could have been bunking
you could have been bunking
he could have been bunking
we could have been bunking
you could have been bunking
they could have been bunking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't bunk
you couldn't bunk
he couldn't bunk
we couldn't bunk
you couldn't bunk
they couldn't bunk 	I couldn't be bunking
you couldn't be bunking
he couldn't be bunking
we couldn't be bunking
you couldn't be bunking
they couldn't be bunking	I couldn't have bunked
you couldn't have bunked
he couldn't have bunked
we couldn't have bunked
you couldn't have bunked
they couldn't have bunked	I couldn't have been bunking
you couldn't have been bunking
he couldn't have been bunking
we couldn't have been bunking
you couldn't have been bunking
they couldn't have been bunking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I bunk?
could you bunk?
could he bunk?
could we bunk?
could you bunk?
could they bunk? 	could I be bunking?
could you be bunking?
could he be bunking?
could we be bunking?
could you be bunking?
could they be bunking? 	could I have bunked?
could you have bunked?
could he have bunked?
could we have bunked?
could you have bunked?
could they have bunked? 	could I have been bunking?
could you have been bunking?
could he have been bunking?
could we have been bunking?
could you have been bunking?
could they have been bunking? 	

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