could misuse
Regular verb: misuse - misused- misused

Affirmation 	
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I could misuse
you could misuse
he could misuse
we could misuse
you could misuse
they could misuse 	I could be misusing
you could be misusing
he could be misusing
we could be misusing
you could be misusing
they could be misusing	I could have misused
you could have misused
he could have misused
we could have misused
you could have misused
they could have misused	I could have been misusing
you could have been misusing
he could have been misusing
we could have been misusing
you could have been misusing
they could have been misusing	

Negation 	
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I couldn't misuse
you couldn't misuse
he couldn't misuse
we couldn't misuse
you couldn't misuse
they couldn't misuse 	I couldn't be misusing
you couldn't be misusing
he couldn't be misusing
we couldn't be misusing
you couldn't be misusing
they couldn't be misusing	I couldn't have misused
you couldn't have misused
he couldn't have misused
we couldn't have misused
you couldn't have misused
they couldn't have misused	I couldn't have been misusing
you couldn't have been misusing
he couldn't have been misusing
we couldn't have been misusing
you couldn't have been misusing
they couldn't have been misusing	

Interrogative form 	
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could I misuse?
could you misuse?
could he misuse?
could we misuse?
could you misuse?
could they misuse? 	could I be misusing?
could you be misusing?
could he be misusing?
could we be misusing?
could you be misusing?
could they be misusing? 	could I have misused?
could you have misused?
could he have misused?
could we have misused?
could you have misused?
could they have misused? 	could I have been misusing?
could you have been misusing?
could he have been misusing?
could we have been misusing?
could you have been misusing?
could they have been misusing? 	

Interro-negative form 	
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couldn't I misuse?
couldn't you misuse?
couldn't he misuse?
couldn't we misuse?
couldn't you misuse?
couldn't they misuse? 	couldn't I be misusing?
couldn't you be misusing?
couldn't he be misusing?
couldn't we be misusing?
couldn't you be misusing?
couldn't they be misusing? 	couldn't I have misused?
couldn't you have misused?
couldn't he have misused?
couldn't we have misused?
couldn't you have misused?
couldn't they have misused? 	couldn't I have been misusing?
couldn't you have been misusing?
couldn't he have been misusing?
couldn't we have been misusing?
couldn't you have been misusing?
couldn't they have been misusing?