could permute
Regular verb: permute - permuted- permuted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could permute
you could permute
she could permute
we could permute
you could permute
they could permute 	I could be permuting
you could be permuting
she could be permuting
we could be permuting
you could be permuting
they could be permuting	I could have permuted
you could have permuted
she 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
she 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 	Perfect 	V-ing perfect 	
I could not permute
you could not permute
she could not permute
we could not permute
you could not permute
they could not permute 	I could not be permuting
you could not be permuting
she could not be permuting
we could not be permuting
you could not be permuting
they could not be permuting	I could not have permuted
you could not have permuted
she could not have permuted
we could not have permuted
you could not have permuted
they could not have permuted	I could not have been permuting
you could not have been permuting
she could not have been permuting
we could not have been permuting
you could not have been permuting
they could not have been permuting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I permute?
could you permute?
could she permute?
could we permute?
could you permute?
could they permute? 	could I be permuting?
could you be permuting?
could she be permuting?
could we be permuting?
could you be permuting?
could they be permuting? 	could I have permuted?
could you have permuted?
could she 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 she 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 	Perfect 	V-ing perfect 	
could I not permute?
could you not permute?
could she not permute?
could we not permute?
could you not permute?
could they not permute? 	could I not be permuting?
could you not be permuting?
could she not be permuting?
could we not be permuting?
could you not be permuting?
could they not be permuting? 	could I not have permuted?
could you not have permuted?
could she not have permuted?
could we not have permuted?
could you not have permuted?
could they not have permuted? 	could I not have been permuting?
could you not have been permuting?
could she not have been permuting?
could we not have been permuting?
could you not have been permuting?
could they not have been permuting?