English verb conjugation
COULD JEST

Regular verb: jest - jested - jested

Affirmation

Simple form	V-ing form
I could jest you could jest she could jest we could jest you could jest they could jest	I could be jesting you could be jesting she could be jesting we could be jesting you could be jesting they could be jesting
Perfect	V-ing perfect
I could have jested you could have jested she could have jested we could have jested you could have jested they could have jested	I could have been jesting you could have been jesting she could have been jesting we could have been jesting you could have been jesting they could have been jesting

Negation

Simple form	V-ing form
I couldn't jest you couldn't jest she couldn't jest we couldn't jest you couldn't jest they couldn't jest	I couldn't be jesting you couldn't be jesting she couldn't be jesting we couldn't be jesting you couldn't be jesting they couldn't be jesting
Perfect	V-ing perfect
I couldn't have jested you couldn't have jested she couldn't have jested we couldn't have jested you couldn't have jested they couldn't have jested	I couldn't have been jesting you couldn't have been jesting she couldn't have been jesting we couldn't have been jesting you couldn't have been jesting they couldn't have been jesting

Interrogative form

Simple form	V-ing form
could I jest? could you jest? could she jest? could we jest? could you jest? could they jest?	could I be jesting? could you be jesting? could she be jesting? could we be jesting? could you be jesting? could they be jesting?
Perfect	V-ing perfect
could I have jested? could you have jested? could she have jested? could we have jested? could you have jested? could they have jested?	could I have been jesting? could you have been jesting? could she have been jesting? could we have been jesting? could you have been jesting? could they have been jesting?

Interro-negative form

Simple form	V-ing form
couldn't I jest? couldn't you jest? couldn't she jest? couldn't we jest? couldn't you jest? couldn't they jest?	couldn't I be jesting? couldn't you be jesting? couldn't she be jesting? couldn't we be jesting? couldn't you be jesting? couldn't they be jesting?
Perfect	V-ing perfect
couldn't I have jested? couldn't you have jested? couldn't she have jested? couldn't we have jested? couldn't you have jested? couldn't they have jested?	couldn't I have been jesting? couldn't you have been jesting? couldn't she have been jesting? couldn't we have been jesting? couldn't you have been jesting? couldn't they have been jesting?