English verb conjugation
COULD PERIL

Regular verb: peril - periled - periled

Affirmation

Simple form	V-ing form
I could peril you could peril she could peril we could peril you could peril they could peril	I could be periling you could be periling she could be periling we could be periling you could be periling they could be periling
Perfect	V-ing perfect
I could have periled you could have periled she could have periled we could have periled you could have periled they could have periled	I could have been periling you could have been periling she could have been periling we could have been periling you could have been periling they could have been periling

Negation

Simple form	V-ing form
I couldn't peril you couldn't peril she couldn't peril we couldn't peril you couldn't peril they couldn't peril	I couldn't be periling you couldn't be periling she couldn't be periling we couldn't be periling you couldn't be periling they couldn't be periling
Perfect	V-ing perfect
I couldn't have periled you couldn't have periled she couldn't have periled we couldn't have periled you couldn't have periled they couldn't have periled	I couldn't have been periling you couldn't have been periling she couldn't have been periling we couldn't have been periling you couldn't have been periling they couldn't have been periling

Interrogative form

Simple form	V-ing form
could I peril? could you peril? could she peril? could we peril? could you peril? could they peril?	could I be periling? could you be periling? could she be periling? could we be periling? could you be periling? could they be periling?
Perfect	V-ing perfect
could I have periled? could you have periled? could she have periled? could we have periled? could you have periled? could they have periled?	could I have been periling? could you have been periling? could she have been periling? could we have been periling? could you have been periling? could they have been periling?

Interro-negative form

Simple form	V-ing form
couldn't I peril? couldn't you peril? couldn't she peril? couldn't we peril? couldn't you peril? couldn't they peril?	couldn't I be periling? couldn't you be periling? couldn't she be periling? couldn't we be periling? couldn't you be periling? couldn't they be periling?
Perfect	V-ing perfect
couldn't I have periled? couldn't you have periled? couldn't she have periled? couldn't we have periled? couldn't you have periled? couldn't they have periled?	couldn't I have been periling? couldn't you have been periling? couldn't she have been periling? couldn't we have been periling? couldn't you have been periling? couldn't they have been periling?