could bruise
Regular verb: bruise - bruised- bruised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could bruise
you could bruise
he could bruise
we could bruise
you could bruise
they could bruise 	I could be bruising
you could be bruising
he could be bruising
we could be bruising
you could be bruising
they could be bruising	I could have bruised
you could have bruised
he could have bruised
we could have bruised
you could have bruised
they could have bruised	I could have been bruising
you could have been bruising
he could have been bruising
we could have been bruising
you could have been bruising
they could have been bruising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't bruise
you couldn't bruise
he couldn't bruise
we couldn't bruise
you couldn't bruise
they couldn't bruise 	I couldn't be bruising
you couldn't be bruising
he couldn't be bruising
we couldn't be bruising
you couldn't be bruising
they couldn't be bruising	I couldn't have bruised
you couldn't have bruised
he couldn't have bruised
we couldn't have bruised
you couldn't have bruised
they couldn't have bruised	I couldn't have been bruising
you couldn't have been bruising
he couldn't have been bruising
we couldn't have been bruising
you couldn't have been bruising
they couldn't have been bruising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I bruise?
could you bruise?
could he bruise?
could we bruise?
could you bruise?
could they bruise? 	could I be bruising?
could you be bruising?
could he be bruising?
could we be bruising?
could you be bruising?
could they be bruising? 	could I have bruised?
could you have bruised?
could he have bruised?
could we have bruised?
could you have bruised?
could they have bruised? 	could I have been bruising?
could you have been bruising?
could he have been bruising?
could we have been bruising?
could you have been bruising?
could they have been bruising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I bruise?
couldn't you bruise?
couldn't he bruise?
couldn't we bruise?
couldn't you bruise?
couldn't they bruise? 	couldn't I be bruising?
couldn't you be bruising?
couldn't he be bruising?
couldn't we be bruising?
couldn't you be bruising?
couldn't they be bruising? 	couldn't I have bruised?
couldn't you have bruised?
couldn't he have bruised?
couldn't we have bruised?
couldn't you have bruised?
couldn't they have bruised? 	couldn't I have been bruising?
couldn't you have been bruising?
couldn't he have been bruising?
couldn't we have been bruising?
couldn't you have been bruising?
couldn't they have been bruising?