I could peep you could peep she could peep we could peep you could peep they could peep
V-ing form
I could be peeping you could be peeping she could be peeping we could be peeping you could be peeping they could be peeping
Perfect
I could have peeped you could have peeped she 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 she could have been peeping we could have been peeping you could have been peeping they could have been peeping
Negation
Simple form
I couldn't peep you couldn't peep she couldn't peep we couldn't peep you couldn't peep they couldn't peep
V-ing form
I couldn't be peeping you couldn't be peeping she couldn't be peeping we couldn't be peeping you couldn't be peeping they couldn't be peeping
Perfect
I couldn't have peeped you couldn't have peeped she couldn't have peeped we couldn't have peeped you couldn't have peeped they couldn't have peeped
V-ing perfect
I couldn't have been peeping you couldn't have been peeping she couldn't have been peeping we couldn't have been peeping you couldn't have been peeping they couldn't have been peeping
Interrogative form
Simple form
could I peep? could you peep? could she peep? could we peep? could you peep? could they peep?
V-ing form
could I be peeping? could you be peeping? could she be peeping? could we be peeping? could you be peeping? could they be peeping?
Perfect
could I have peeped? could you have peeped? could she 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 she have been peeping? could we have been peeping? could you have been peeping? could they have been peeping?
Interro-negative form
Simple form
couldn't I peep? couldn't you peep? couldn't she peep? couldn't we peep? couldn't you peep? couldn't they peep?
V-ing form
couldn't I be peeping? couldn't you be peeping? couldn't she be peeping? couldn't we be peeping? couldn't you be peeping? couldn't they be peeping?
Perfect
couldn't I have peeped? couldn't you have peeped? couldn't she have peeped? couldn't we have peeped? couldn't you have peeped? couldn't they have peeped?
V-ing perfect
couldn't I have been peeping? couldn't you have been peeping? couldn't she have been peeping? couldn't we have been peeping? couldn't you have been peeping? couldn't they have been peeping?