could punch
Regular verb: punch - punched- punched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could punch
you could punch
she could punch
we could punch
you could punch
they could punch 	I could be punching
you could be punching
she could be punching
we could be punching
you could be punching
they could be punching	I could have punched
you could have punched
she could have punched
we could have punched
you could have punched
they could have punched	I could have been punching
you could have been punching
she could have been punching
we could have been punching
you could have been punching
they could have been punching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't punch
you couldn't punch
she couldn't punch
we couldn't punch
you couldn't punch
they couldn't punch 	I couldn't be punching
you couldn't be punching
she couldn't be punching
we couldn't be punching
you couldn't be punching
they couldn't be punching	I couldn't have punched
you couldn't have punched
she couldn't have punched
we couldn't have punched
you couldn't have punched
they couldn't have punched	I couldn't have been punching
you couldn't have been punching
she couldn't have been punching
we couldn't have been punching
you couldn't have been punching
they couldn't have been punching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I punch?
could you punch?
could she punch?
could we punch?
could you punch?
could they punch? 	could I be punching?
could you be punching?
could she be punching?
could we be punching?
could you be punching?
could they be punching? 	could I have punched?
could you have punched?
could she have punched?
could we have punched?
could you have punched?
could they have punched? 	could I have been punching?
could you have been punching?
could she have been punching?
could we have been punching?
could you have been punching?
could they have been punching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I punch?
couldn't you punch?
couldn't she punch?
couldn't we punch?
couldn't you punch?
couldn't they punch? 	couldn't I be punching?
couldn't you be punching?
couldn't she be punching?
couldn't we be punching?
couldn't you be punching?
couldn't they be punching? 	couldn't I have punched?
couldn't you have punched?
couldn't she have punched?
couldn't we have punched?
couldn't you have punched?
couldn't they have punched? 	couldn't I have been punching?
couldn't you have been punching?
couldn't she have been punching?
couldn't we have been punching?
couldn't you have been punching?
couldn't they have been punching?