English verb conjugation
COULD RIP

Regular verb: rip - ripped - ripped

Affirmation

Simple form	V-ing form
I could rip you could rip he could rip we could rip you could rip they could rip	I could be ripping you could be ripping he 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 he 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 he 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 he 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 he 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 he 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 he 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 he rip? could we rip? could you rip? could they rip?	could I be ripping? could you be ripping? could he 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 he 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 he 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 he 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 he 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 he 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 he have been ripping? couldn't we have been ripping? couldn't you have been ripping? couldn't they have been ripping?