could stagnate
Verbe régulier : stagnate - stagnated- stagnated
Traduction française : stagner - croupir 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could stagnate
you could stagnate
she could stagnate
we could stagnate
you could stagnate
they could stagnate 	I could be stagnating
you could be stagnating
she could be stagnating
we could be stagnating
you could be stagnating
they could be stagnating	I could have stagnated
you could have stagnated
she could have stagnated
we could have stagnated
you could have stagnated
they could have stagnated	I could have been stagnating
you could have been stagnating
she could have been stagnating
we could have been stagnating
you could have been stagnating
they could have been stagnating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't stagnate
you couldn't stagnate
she couldn't stagnate
we couldn't stagnate
you couldn't stagnate
they couldn't stagnate 	I couldn't be stagnating
you couldn't be stagnating
she couldn't be stagnating
we couldn't be stagnating
you couldn't be stagnating
they couldn't be stagnating	I couldn't have stagnated
you couldn't have stagnated
she couldn't have stagnated
we couldn't have stagnated
you couldn't have stagnated
they couldn't have stagnated	I couldn't have been stagnating
you couldn't have been stagnating
she couldn't have been stagnating
we couldn't have been stagnating
you couldn't have been stagnating
they couldn't have been stagnating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I stagnate?
could you stagnate?
could she stagnate?
could we stagnate?
could you stagnate?
could they stagnate? 	could I be stagnating?
could you be stagnating?
could she be stagnating?
could we be stagnating?
could you be stagnating?
could they be stagnating? 	could I have stagnated?
could you have stagnated?
could she have stagnated?
could we have stagnated?
could you have stagnated?
could they have stagnated? 	could I have been stagnating?
could you have been stagnating?
could she have been stagnating?
could we have been stagnating?
could you have been stagnating?
could they have been stagnating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I stagnate?
couldn't you stagnate?
couldn't she stagnate?
couldn't we stagnate?
couldn't you stagnate?
couldn't they stagnate? 	couldn't I be stagnating?
couldn't you be stagnating?
couldn't she be stagnating?
couldn't we be stagnating?
couldn't you be stagnating?
couldn't they be stagnating? 	couldn't I have stagnated?
couldn't you have stagnated?
couldn't she have stagnated?
couldn't we have stagnated?
couldn't you have stagnated?
couldn't they have stagnated? 	couldn't I have been stagnating?
couldn't you have been stagnating?
couldn't she have been stagnating?
couldn't we have been stagnating?
couldn't you have been stagnating?
couldn't they have been stagnating?