could presolve
Verbe régulier : presolve - presolved- presolved

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could presolve
you could presolve
he could presolve
we could presolve
you could presolve
they could presolve 	I could be presolving
you could be presolving
he could be presolving
we could be presolving
you could be presolving
they could be presolving	I could have presolved
you could have presolved
he could have presolved
we could have presolved
you could have presolved
they could have presolved	I could have been presolving
you could have been presolving
he could have been presolving
we could have been presolving
you could have been presolving
they could have been presolving	

Négation 	
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I couldn't presolve
you couldn't presolve
he couldn't presolve
we couldn't presolve
you couldn't presolve
they couldn't presolve 	I couldn't be presolving
you couldn't be presolving
he couldn't be presolving
we couldn't be presolving
you couldn't be presolving
they couldn't be presolving	I couldn't have presolved
you couldn't have presolved
he couldn't have presolved
we couldn't have presolved
you couldn't have presolved
they couldn't have presolved	I couldn't have been presolving
you couldn't have been presolving
he couldn't have been presolving
we couldn't have been presolving
you couldn't have been presolving
they couldn't have been presolving	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I presolve?
could you presolve?
could he presolve?
could we presolve?
could you presolve?
could they presolve? 	could I be presolving?
could you be presolving?
could he be presolving?
could we be presolving?
could you be presolving?
could they be presolving? 	could I have presolved?
could you have presolved?
could he have presolved?
could we have presolved?
could you have presolved?
could they have presolved? 	could I have been presolving?
could you have been presolving?
could he have been presolving?
could we have been presolving?
could you have been presolving?
could they have been presolving? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I presolve?
couldn't you presolve?
couldn't he presolve?
couldn't we presolve?
couldn't you presolve?
couldn't they presolve? 	couldn't I be presolving?
couldn't you be presolving?
couldn't he be presolving?
couldn't we be presolving?
couldn't you be presolving?
couldn't they be presolving? 	couldn't I have presolved?
couldn't you have presolved?
couldn't he have presolved?
couldn't we have presolved?
couldn't you have presolved?
couldn't they have presolved? 	couldn't I have been presolving?
couldn't you have been presolving?
couldn't he have been presolving?
couldn't we have been presolving?
couldn't you have been presolving?
couldn't they have been presolving?