could bound
Regular verb: bound - bounded- bounded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could bound
you could bound
he could bound
we could bound
you could bound
they could bound 	I could be bounding
you could be bounding
he could be bounding
we could be bounding
you could be bounding
they could be bounding	I could have bounded
you could have bounded
he could have bounded
we could have bounded
you could have bounded
they could have bounded	I could have been bounding
you could have been bounding
he could have been bounding
we could have been bounding
you could have been bounding
they could have been bounding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't bound
you couldn't bound
he couldn't bound
we couldn't bound
you couldn't bound
they couldn't bound 	I couldn't be bounding
you couldn't be bounding
he couldn't be bounding
we couldn't be bounding
you couldn't be bounding
they couldn't be bounding	I couldn't have bounded
you couldn't have bounded
he couldn't have bounded
we couldn't have bounded
you couldn't have bounded
they couldn't have bounded	I couldn't have been bounding
you couldn't have been bounding
he couldn't have been bounding
we couldn't have been bounding
you couldn't have been bounding
they couldn't have been bounding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I bound?
could you bound?
could he bound?
could we bound?
could you bound?
could they bound? 	could I be bounding?
could you be bounding?
could he be bounding?
could we be bounding?
could you be bounding?
could they be bounding? 	could I have bounded?
could you have bounded?
could he have bounded?
could we have bounded?
could you have bounded?
could they have bounded? 	could I have been bounding?
could you have been bounding?
could he have been bounding?
could we have been bounding?
could you have been bounding?
could they have been bounding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I bound?
couldn't you bound?
couldn't he bound?
couldn't we bound?
couldn't you bound?
couldn't they bound? 	couldn't I be bounding?
couldn't you be bounding?
couldn't he be bounding?
couldn't we be bounding?
couldn't you be bounding?
couldn't they be bounding? 	couldn't I have bounded?
couldn't you have bounded?
couldn't he have bounded?
couldn't we have bounded?
couldn't you have bounded?
couldn't they have bounded? 	couldn't I have been bounding?
couldn't you have been bounding?
couldn't he have been bounding?
couldn't we have been bounding?
couldn't you have been bounding?
couldn't they have been bounding?