could welter
Verbe régulier : welter - weltered- weltered

Affirmation 	
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I could welter
you could welter
he could welter
we could welter
you could welter
they could welter 	I could be weltering
you could be weltering
he could be weltering
we could be weltering
you could be weltering
they could be weltering	I could have weltered
you could have weltered
he could have weltered
we could have weltered
you could have weltered
they could have weltered	I could have been weltering
you could have been weltering
he could have been weltering
we could have been weltering
you could have been weltering
they could have been weltering	

Négation 	
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I couldn't welter
you couldn't welter
he couldn't welter
we couldn't welter
you couldn't welter
they couldn't welter 	I couldn't be weltering
you couldn't be weltering
he couldn't be weltering
we couldn't be weltering
you couldn't be weltering
they couldn't be weltering	I couldn't have weltered
you couldn't have weltered
he couldn't have weltered
we couldn't have weltered
you couldn't have weltered
they couldn't have weltered	I couldn't have been weltering
you couldn't have been weltering
he couldn't have been weltering
we couldn't have been weltering
you couldn't have been weltering
they couldn't have been weltering	

Forme interrogative 	
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could I welter?
could you welter?
could he welter?
could we welter?
could you welter?
could they welter? 	could I be weltering?
could you be weltering?
could he be weltering?
could we be weltering?
could you be weltering?
could they be weltering? 	could I have weltered?
could you have weltered?
could he have weltered?
could we have weltered?
could you have weltered?
could they have weltered? 	could I have been weltering?
could you have been weltering?
could he have been weltering?
could we have been weltering?
could you have been weltering?
could they have been weltering? 	

Forme interro-négative 	
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couldn't I welter?
couldn't you welter?
couldn't he welter?
couldn't we welter?
couldn't you welter?
couldn't they welter? 	couldn't I be weltering?
couldn't you be weltering?
couldn't he be weltering?
couldn't we be weltering?
couldn't you be weltering?
couldn't they be weltering? 	couldn't I have weltered?
couldn't you have weltered?
couldn't he have weltered?
couldn't we have weltered?
couldn't you have weltered?
couldn't they have weltered? 	couldn't I have been weltering?
couldn't you have been weltering?
couldn't he have been weltering?
couldn't we have been weltering?
couldn't you have been weltering?
couldn't they have been weltering?