English verb conjugation
COULD SHRIVEL

Regular verb: shrivel - shrivelled - shrivelled

Affirmation

Simple form	V-ing form
I could shrivel you could shrivel she could shrivel we could shrivel you could shrivel they could shrivel	I could be shrivelling you could be shrivelling she could be shrivelling we could be shrivelling you could be shrivelling they could be shrivelling
Perfect	V-ing perfect
I could have shrivelled you could have shrivelled she could have shrivelled we could have shrivelled you could have shrivelled they could have shrivelled	I could have been shrivelling you could have been shrivelling she could have been shrivelling we could have been shrivelling you could have been shrivelling they could have been shrivelling

Negation

Simple form	V-ing form
I couldn't shrivel you couldn't shrivel she couldn't shrivel we couldn't shrivel you couldn't shrivel they couldn't shrivel	I couldn't be shrivelling you couldn't be shrivelling she couldn't be shrivelling we couldn't be shrivelling you couldn't be shrivelling they couldn't be shrivelling
Perfect	V-ing perfect
I couldn't have shrivelled you couldn't have shrivelled she couldn't have shrivelled we couldn't have shrivelled you couldn't have shrivelled they couldn't have shrivelled	I couldn't have been shrivelling you couldn't have been shrivelling she couldn't have been shrivelling we couldn't have been shrivelling you couldn't have been shrivelling they couldn't have been shrivelling

Interrogative form

Simple form	V-ing form
could I shrivel? could you shrivel? could she shrivel? could we shrivel? could you shrivel? could they shrivel?	could I be shrivelling? could you be shrivelling? could she be shrivelling? could we be shrivelling? could you be shrivelling? could they be shrivelling?
Perfect	V-ing perfect
could I have shrivelled? could you have shrivelled? could she have shrivelled? could we have shrivelled? could you have shrivelled? could they have shrivelled?	could I have been shrivelling? could you have been shrivelling? could she have been shrivelling? could we have been shrivelling? could you have been shrivelling? could they have been shrivelling?

Interro-negative form

Simple form	V-ing form
couldn't I shrivel? couldn't you shrivel? couldn't she shrivel? couldn't we shrivel? couldn't you shrivel? couldn't they shrivel?	couldn't I be shrivelling? couldn't you be shrivelling? couldn't she be shrivelling? couldn't we be shrivelling? couldn't you be shrivelling? couldn't they be shrivelling?
Perfect	V-ing perfect
couldn't I have shrivelled? couldn't you have shrivelled? couldn't she have shrivelled? couldn't we have shrivelled? couldn't you have shrivelled? couldn't they have shrivelled?	couldn't I have been shrivelling? couldn't you have been shrivelling? couldn't she have been shrivelling? couldn't we have been shrivelling? couldn't you have been shrivelling? couldn't they have been shrivelling?