could involve
Regular verb: involve - involved- involved

Affirmation 	
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I could involve
you could involve
he could involve
we could involve
you could involve
they could involve 	I could be involving
you could be involving
he could be involving
we could be involving
you could be involving
they could be involving	I could have involved
you could have involved
he could have involved
we could have involved
you could have involved
they could have involved	I could have been involving
you could have been involving
he could have been involving
we could have been involving
you could have been involving
they could have been involving	

Negation 	
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I couldn't involve
you couldn't involve
he couldn't involve
we couldn't involve
you couldn't involve
they couldn't involve 	I couldn't be involving
you couldn't be involving
he couldn't be involving
we couldn't be involving
you couldn't be involving
they couldn't be involving	I couldn't have involved
you couldn't have involved
he couldn't have involved
we couldn't have involved
you couldn't have involved
they couldn't have involved	I couldn't have been involving
you couldn't have been involving
he couldn't have been involving
we couldn't have been involving
you couldn't have been involving
they couldn't have been involving	

Interrogative form 	
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could I involve?
could you involve?
could he involve?
could we involve?
could you involve?
could they involve? 	could I be involving?
could you be involving?
could he be involving?
could we be involving?
could you be involving?
could they be involving? 	could I have involved?
could you have involved?
could he have involved?
could we have involved?
could you have involved?
could they have involved? 	could I have been involving?
could you have been involving?
could he have been involving?
could we have been involving?
could you have been involving?
could they have been involving? 	

Interro-negative form 	
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couldn't I involve?
couldn't you involve?
couldn't he involve?
couldn't we involve?
couldn't you involve?
couldn't they involve? 	couldn't I be involving?
couldn't you be involving?
couldn't he be involving?
couldn't we be involving?
couldn't you be involving?
couldn't they be involving? 	couldn't I have involved?
couldn't you have involved?
couldn't he have involved?
couldn't we have involved?
couldn't you have involved?
couldn't they have involved? 	couldn't I have been involving?
couldn't you have been involving?
couldn't he have been involving?
couldn't we have been involving?
couldn't you have been involving?
couldn't they have been involving?