could rip
Regular verb: rip - ripped- ripped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could rip
you could rip
she could rip
we could rip
you could rip
they could rip 	I could be ripping
you could be ripping
she could be ripping
we could be ripping
you could be ripping
they could be ripping	I could have ripped
you could have ripped
she could have ripped
we could have ripped
you could have ripped
they could have ripped	I could have been ripping
you could have been ripping
she could have been ripping
we could have been ripping
you could have been ripping
they could have been ripping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't rip
you couldn't rip
she couldn't rip
we couldn't rip
you couldn't rip
they couldn't rip 	I couldn't be ripping
you couldn't be ripping
she couldn't be ripping
we couldn't be ripping
you couldn't be ripping
they couldn't be ripping	I couldn't have ripped
you couldn't have ripped
she couldn't have ripped
we couldn't have ripped
you couldn't have ripped
they couldn't have ripped	I couldn't have been ripping
you couldn't have been ripping
she couldn't have been ripping
we couldn't have been ripping
you couldn't have been ripping
they couldn't have been ripping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I rip?
could you rip?
could she rip?
could we rip?
could you rip?
could they rip? 	could I be ripping?
could you be ripping?
could she be ripping?
could we be ripping?
could you be ripping?
could they be ripping? 	could I have ripped?
could you have ripped?
could she have ripped?
could we have ripped?
could you have ripped?
could they have ripped? 	could I have been ripping?
could you have been ripping?
could she have been ripping?
could we have been ripping?
could you have been ripping?
could they have been ripping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I rip?
couldn't you rip?
couldn't she rip?
couldn't we rip?
couldn't you rip?
couldn't they rip? 	couldn't I be ripping?
couldn't you be ripping?
couldn't she be ripping?
couldn't we be ripping?
couldn't you be ripping?
couldn't they be ripping? 	couldn't I have ripped?
couldn't you have ripped?
couldn't she have ripped?
couldn't we have ripped?
couldn't you have ripped?
couldn't they have ripped? 	couldn't I have been ripping?
couldn't you have been ripping?
couldn't she have been ripping?
couldn't we have been ripping?
couldn't you have been ripping?
couldn't they have been ripping?