could troupe
Regular verb: troupe - trouped- trouped

Affirmation 	
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I could troupe
you could troupe
he could troupe
we could troupe
you could troupe
they could troupe 	I could be trouping
you could be trouping
he could be trouping
we could be trouping
you could be trouping
they could be trouping	I could have trouped
you could have trouped
he could have trouped
we could have trouped
you could have trouped
they could have trouped	I could have been trouping
you could have been trouping
he could have been trouping
we could have been trouping
you could have been trouping
they could have been trouping	

Negation 	
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I couldn't troupe
you couldn't troupe
he couldn't troupe
we couldn't troupe
you couldn't troupe
they couldn't troupe 	I couldn't be trouping
you couldn't be trouping
he couldn't be trouping
we couldn't be trouping
you couldn't be trouping
they couldn't be trouping	I couldn't have trouped
you couldn't have trouped
he couldn't have trouped
we couldn't have trouped
you couldn't have trouped
they couldn't have trouped	I couldn't have been trouping
you couldn't have been trouping
he couldn't have been trouping
we couldn't have been trouping
you couldn't have been trouping
they couldn't have been trouping	

Interrogative form 	
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could I troupe?
could you troupe?
could he troupe?
could we troupe?
could you troupe?
could they troupe? 	could I be trouping?
could you be trouping?
could he be trouping?
could we be trouping?
could you be trouping?
could they be trouping? 	could I have trouped?
could you have trouped?
could he have trouped?
could we have trouped?
could you have trouped?
could they have trouped? 	could I have been trouping?
could you have been trouping?
could he have been trouping?
could we have been trouping?
could you have been trouping?
could they have been trouping? 	

Interro-negative form 	
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couldn't I troupe?
couldn't you troupe?
couldn't he troupe?
couldn't we troupe?
couldn't you troupe?
couldn't they troupe? 	couldn't I be trouping?
couldn't you be trouping?
couldn't he be trouping?
couldn't we be trouping?
couldn't you be trouping?
couldn't they be trouping? 	couldn't I have trouped?
couldn't you have trouped?
couldn't he have trouped?
couldn't we have trouped?
couldn't you have trouped?
couldn't they have trouped? 	couldn't I have been trouping?
couldn't you have been trouping?
couldn't he have been trouping?
couldn't we have been trouping?
couldn't you have been trouping?
couldn't they have been trouping?