could busy
Regular verb: busy - busied- busied

Affirmation 	
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I could busy
you could busy
she could busy
we could busy
you could busy
they could busy 	I could be busying
you could be busying
she could be busying
we could be busying
you could be busying
they could be busying	I could have busied
you could have busied
she could have busied
we could have busied
you could have busied
they could have busied	I could have been busying
you could have been busying
she could have been busying
we could have been busying
you could have been busying
they could have been busying	

Negation 	
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I couldn't busy
you couldn't busy
she couldn't busy
we couldn't busy
you couldn't busy
they couldn't busy 	I couldn't be busying
you couldn't be busying
she couldn't be busying
we couldn't be busying
you couldn't be busying
they couldn't be busying	I couldn't have busied
you couldn't have busied
she couldn't have busied
we couldn't have busied
you couldn't have busied
they couldn't have busied	I couldn't have been busying
you couldn't have been busying
she couldn't have been busying
we couldn't have been busying
you couldn't have been busying
they couldn't have been busying	

Interrogative form 	
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could I busy?
could you busy?
could she busy?
could we busy?
could you busy?
could they busy? 	could I be busying?
could you be busying?
could she be busying?
could we be busying?
could you be busying?
could they be busying? 	could I have busied?
could you have busied?
could she have busied?
could we have busied?
could you have busied?
could they have busied? 	could I have been busying?
could you have been busying?
could she have been busying?
could we have been busying?
could you have been busying?
could they have been busying? 	

Interro-negative form 	
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couldn't I busy?
couldn't you busy?
couldn't she busy?
couldn't we busy?
couldn't you busy?
couldn't they busy? 	couldn't I be busying?
couldn't you be busying?
couldn't she be busying?
couldn't we be busying?
couldn't you be busying?
couldn't they be busying? 	couldn't I have busied?
couldn't you have busied?
couldn't she have busied?
couldn't we have busied?
couldn't you have busied?
couldn't they have busied? 	couldn't I have been busying?
couldn't you have been busying?
couldn't she have been busying?
couldn't we have been busying?
couldn't you have been busying?
couldn't they have been busying?