English verb conjugation
COULD RIP

Regular verb: rip - ripped - ripped

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?