I could peep you could peep he could peep we could peep you could peep they could peep
V-ing form
I could be peeping you could be peeping he could be peeping we could be peeping you could be peeping they could be peeping
Perfect
I could have peeped you could have peeped he could have peeped we could have peeped you could have peeped they could have peeped
V-ing perfect
I could have been peeping you could have been peeping he could have been peeping we could have been peeping you could have been peeping they could have been peeping
Negation
Simple form
I could not peep you could not peep he could not peep we could not peep you could not peep they could not peep
V-ing form
I could not be peeping you could not be peeping he could not be peeping we could not be peeping you could not be peeping they could not be peeping
Perfect
I could not have peeped you could not have peeped he could not have peeped we could not have peeped you could not have peeped they could not have peeped
V-ing perfect
I could not have been peeping you could not have been peeping he could not have been peeping we could not have been peeping you could not have been peeping they could not have been peeping
Interrogative form
Simple form
could I peep? could you peep? could he peep? could we peep? could you peep? could they peep?
V-ing form
could I be peeping? could you be peeping? could he be peeping? could we be peeping? could you be peeping? could they be peeping?
Perfect
could I have peeped? could you have peeped? could he have peeped? could we have peeped? could you have peeped? could they have peeped?
V-ing perfect
could I have been peeping? could you have been peeping? could he have been peeping? could we have been peeping? could you have been peeping? could they have been peeping?
Interro-negative form
Simple form
could I not peep? could you not peep? could he not peep? could we not peep? could you not peep? could they not peep?
V-ing form
could I not be peeping? could you not be peeping? could he not be peeping? could we not be peeping? could you not be peeping? could they not be peeping?
Perfect
could I not have peeped? could you not have peeped? could he not have peeped? could we not have peeped? could you not have peeped? could they not have peeped?
V-ing perfect
could I not have been peeping? could you not have been peeping? could he not have been peeping? could we not have been peeping? could you not have been peeping? could they not have been peeping?