English verb conjugation
COULD RETOOL

Regular verb: retool - retooled - retooled

Affirmation

Simple form	V-ing form
I could retool you could retool she could retool we could retool you could retool they could retool	I could be retooling you could be retooling she could be retooling we could be retooling you could be retooling they could be retooling
Perfect	V-ing perfect
I could have retooled you could have retooled she could have retooled we could have retooled you could have retooled they could have retooled	I could have been retooling you could have been retooling she could have been retooling we could have been retooling you could have been retooling they could have been retooling

Negation

Simple form	V-ing form
I couldn't retool you couldn't retool she couldn't retool we couldn't retool you couldn't retool they couldn't retool	I couldn't be retooling you couldn't be retooling she couldn't be retooling we couldn't be retooling you couldn't be retooling they couldn't be retooling
Perfect	V-ing perfect
I couldn't have retooled you couldn't have retooled she couldn't have retooled we couldn't have retooled you couldn't have retooled they couldn't have retooled	I couldn't have been retooling you couldn't have been retooling she couldn't have been retooling we couldn't have been retooling you couldn't have been retooling they couldn't have been retooling

Interrogative form

Simple form	V-ing form
could I retool? could you retool? could she retool? could we retool? could you retool? could they retool?	could I be retooling? could you be retooling? could she be retooling? could we be retooling? could you be retooling? could they be retooling?
Perfect	V-ing perfect
could I have retooled? could you have retooled? could she have retooled? could we have retooled? could you have retooled? could they have retooled?	could I have been retooling? could you have been retooling? could she have been retooling? could we have been retooling? could you have been retooling? could they have been retooling?

Interro-negative form

Simple form	V-ing form
couldn't I retool? couldn't you retool? couldn't she retool? couldn't we retool? couldn't you retool? couldn't they retool?	couldn't I be retooling? couldn't you be retooling? couldn't she be retooling? couldn't we be retooling? couldn't you be retooling? couldn't they be retooling?
Perfect	V-ing perfect
couldn't I have retooled? couldn't you have retooled? couldn't she have retooled? couldn't we have retooled? couldn't you have retooled? couldn't they have retooled?	couldn't I have been retooling? couldn't you have been retooling? couldn't she have been retooling? couldn't we have been retooling? couldn't you have been retooling? couldn't they have been retooling?