English verb conjugation
COULD PERM

Regular verb: perm - permed - permed

Affirmation

Simple form	V-ing form
I could perm you could perm he could perm we could perm you could perm they could perm	I could be perming you could be perming he could be perming we could be perming you could be perming they could be perming
Perfect	V-ing perfect
I could have permed you could have permed he could have permed we could have permed you could have permed they could have permed	I could have been perming you could have been perming he could have been perming we could have been perming you could have been perming they could have been perming

Negation

Simple form	V-ing form
I couldn't perm you couldn't perm he couldn't perm we couldn't perm you couldn't perm they couldn't perm	I couldn't be perming you couldn't be perming he couldn't be perming we couldn't be perming you couldn't be perming they couldn't be perming
Perfect	V-ing perfect
I couldn't have permed you couldn't have permed he couldn't have permed we couldn't have permed you couldn't have permed they couldn't have permed	I couldn't have been perming you couldn't have been perming he couldn't have been perming we couldn't have been perming you couldn't have been perming they couldn't have been perming

Interrogative form

Simple form	V-ing form
could I perm? could you perm? could he perm? could we perm? could you perm? could they perm?	could I be perming? could you be perming? could he be perming? could we be perming? could you be perming? could they be perming?
Perfect	V-ing perfect
could I have permed? could you have permed? could he have permed? could we have permed? could you have permed? could they have permed?	could I have been perming? could you have been perming? could he have been perming? could we have been perming? could you have been perming? could they have been perming?

Interro-negative form

Simple form	V-ing form
couldn't I perm? couldn't you perm? couldn't he perm? couldn't we perm? couldn't you perm? couldn't they perm?	couldn't I be perming? couldn't you be perming? couldn't he be perming? couldn't we be perming? couldn't you be perming? couldn't they be perming?
Perfect	V-ing perfect
couldn't I have permed? couldn't you have permed? couldn't he have permed? couldn't we have permed? couldn't you have permed? couldn't they have permed?	couldn't I have been perming? couldn't you have been perming? couldn't he have been perming? couldn't we have been perming? couldn't you have been perming? couldn't they have been perming?