could underestimate
Verbe régulier : underestimate - underestimated- underestimated
Traduction française : sous-estimer - mésestimer 

Affirmation 	
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I could underestimate
you could underestimate
he could underestimate
we could underestimate
you could underestimate
they could underestimate 	I could be underestimating
you could be underestimating
he could be underestimating
we could be underestimating
you could be underestimating
they could be underestimating	I could have underestimated
you could have underestimated
he could have underestimated
we could have underestimated
you could have underestimated
they could have underestimated	I could have been underestimating
you could have been underestimating
he could have been underestimating
we could have been underestimating
you could have been underestimating
they could have been underestimating	

Négation 	
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I couldn't underestimate
you couldn't underestimate
he couldn't underestimate
we couldn't underestimate
you couldn't underestimate
they couldn't underestimate 	I couldn't be underestimating
you couldn't be underestimating
he couldn't be underestimating
we couldn't be underestimating
you couldn't be underestimating
they couldn't be underestimating	I couldn't have underestimated
you couldn't have underestimated
he couldn't have underestimated
we couldn't have underestimated
you couldn't have underestimated
they couldn't have underestimated	I couldn't have been underestimating
you couldn't have been underestimating
he couldn't have been underestimating
we couldn't have been underestimating
you couldn't have been underestimating
they couldn't have been underestimating	

Forme interrogative 	
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could I underestimate?
could you underestimate?
could he underestimate?
could we underestimate?
could you underestimate?
could they underestimate? 	could I be underestimating?
could you be underestimating?
could he be underestimating?
could we be underestimating?
could you be underestimating?
could they be underestimating? 	could I have underestimated?
could you have underestimated?
could he have underestimated?
could we have underestimated?
could you have underestimated?
could they have underestimated? 	could I have been underestimating?
could you have been underestimating?
could he have been underestimating?
could we have been underestimating?
could you have been underestimating?
could they have been underestimating? 	

Forme interro-négative 	
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couldn't I underestimate?
couldn't you underestimate?
couldn't he underestimate?
couldn't we underestimate?
couldn't you underestimate?
couldn't they underestimate? 	couldn't I be underestimating?
couldn't you be underestimating?
couldn't he be underestimating?
couldn't we be underestimating?
couldn't you be underestimating?
couldn't they be underestimating? 	couldn't I have underestimated?
couldn't you have underestimated?
couldn't he have underestimated?
couldn't we have underestimated?
couldn't you have underestimated?
couldn't they have underestimated? 	couldn't I have been underestimating?
couldn't you have been underestimating?
couldn't he have been underestimating?
couldn't we have been underestimating?
couldn't you have been underestimating?
couldn't they have been underestimating?