English verb conjugation
COULD PERMUTE

Regular verb: permute - permuted - permuted

Affirmation

Simple form	V-ing form
I could permute you could permute he could permute we could permute you could permute they could permute	I could be permuting you could be permuting he could be permuting we could be permuting you could be permuting they could be permuting
Perfect	V-ing perfect
I could have permuted you could have permuted he could have permuted we could have permuted you could have permuted they could have permuted	I could have been permuting you could have been permuting he could have been permuting we could have been permuting you could have been permuting they could have been permuting

Negation

Simple form	V-ing form
I couldn't permute you couldn't permute he couldn't permute we couldn't permute you couldn't permute they couldn't permute	I couldn't be permuting you couldn't be permuting he couldn't be permuting we couldn't be permuting you couldn't be permuting they couldn't be permuting
Perfect	V-ing perfect
I couldn't have permuted you couldn't have permuted he couldn't have permuted we couldn't have permuted you couldn't have permuted they couldn't have permuted	I couldn't have been permuting you couldn't have been permuting he couldn't have been permuting we couldn't have been permuting you couldn't have been permuting they couldn't have been permuting

Interrogative form

Simple form	V-ing form
could I permute? could you permute? could he permute? could we permute? could you permute? could they permute?	could I be permuting? could you be permuting? could he be permuting? could we be permuting? could you be permuting? could they be permuting?
Perfect	V-ing perfect
could I have permuted? could you have permuted? could he have permuted? could we have permuted? could you have permuted? could they have permuted?	could I have been permuting? could you have been permuting? could he have been permuting? could we have been permuting? could you have been permuting? could they have been permuting?

Interro-negative form

Simple form	V-ing form
couldn't I permute? couldn't you permute? couldn't he permute? couldn't we permute? couldn't you permute? couldn't they permute?	couldn't I be permuting? couldn't you be permuting? couldn't he be permuting? couldn't we be permuting? couldn't you be permuting? couldn't they be permuting?
Perfect	V-ing perfect
couldn't I have permuted? couldn't you have permuted? couldn't he have permuted? couldn't we have permuted? couldn't you have permuted? couldn't they have permuted?	couldn't I have been permuting? couldn't you have been permuting? couldn't he have been permuting? couldn't we have been permuting? couldn't you have been permuting? couldn't they have been permuting?