could iterate
Verbe régulier : iterate - iterated- iterated

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could iterate
you could iterate
she could iterate
we could iterate
you could iterate
they could iterate 	I could be iterating
you could be iterating
she could be iterating
we could be iterating
you could be iterating
they could be iterating	I could have iterated
you could have iterated
she could have iterated
we could have iterated
you could have iterated
they could have iterated	I could have been iterating
you could have been iterating
she could have been iterating
we could have been iterating
you could have been iterating
they could have been iterating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't iterate
you couldn't iterate
she couldn't iterate
we couldn't iterate
you couldn't iterate
they couldn't iterate 	I couldn't be iterating
you couldn't be iterating
she couldn't be iterating
we couldn't be iterating
you couldn't be iterating
they couldn't be iterating	I couldn't have iterated
you couldn't have iterated
she couldn't have iterated
we couldn't have iterated
you couldn't have iterated
they couldn't have iterated	I couldn't have been iterating
you couldn't have been iterating
she couldn't have been iterating
we couldn't have been iterating
you couldn't have been iterating
they couldn't have been iterating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I iterate?
could you iterate?
could she iterate?
could we iterate?
could you iterate?
could they iterate? 	could I be iterating?
could you be iterating?
could she be iterating?
could we be iterating?
could you be iterating?
could they be iterating? 	could I have iterated?
could you have iterated?
could she have iterated?
could we have iterated?
could you have iterated?
could they have iterated? 	could I have been iterating?
could you have been iterating?
could she have been iterating?
could we have been iterating?
could you have been iterating?
could they have been iterating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I iterate?
couldn't you iterate?
couldn't she iterate?
couldn't we iterate?
couldn't you iterate?
couldn't they iterate? 	couldn't I be iterating?
couldn't you be iterating?
couldn't she be iterating?
couldn't we be iterating?
couldn't you be iterating?
couldn't they be iterating? 	couldn't I have iterated?
couldn't you have iterated?
couldn't she have iterated?
couldn't we have iterated?
couldn't you have iterated?
couldn't they have iterated? 	couldn't I have been iterating?
couldn't you have been iterating?
couldn't she have been iterating?
couldn't we have been iterating?
couldn't you have been iterating?
couldn't they have been iterating?