could cross-multiply
Regular verb: cross-multiply - cross-multiplied- cross-multiplied

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could cross-multiply
you could cross-multiply
she could cross-multiply
we could cross-multiply
you could cross-multiply
they could cross-multiply 	I could be cross-multiplying
you could be cross-multiplying
she could be cross-multiplying
we could be cross-multiplying
you could be cross-multiplying
they could be cross-multiplying	I could have cross-multiplied
you could have cross-multiplied
she could have cross-multiplied
we could have cross-multiplied
you could have cross-multiplied
they could have cross-multiplied	I could have been cross-multiplying
you could have been cross-multiplying
she could have been cross-multiplying
we could have been cross-multiplying
you could have been cross-multiplying
they could have been cross-multiplying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not cross-multiply
you could not cross-multiply
she could not cross-multiply
we could not cross-multiply
you could not cross-multiply
they could not cross-multiply 	I could not be cross-multiplying
you could not be cross-multiplying
she could not be cross-multiplying
we could not be cross-multiplying
you could not be cross-multiplying
they could not be cross-multiplying	I could not have cross-multiplied
you could not have cross-multiplied
she could not have cross-multiplied
we could not have cross-multiplied
you could not have cross-multiplied
they could not have cross-multiplied	I could not have been cross-multiplying
you could not have been cross-multiplying
she could not have been cross-multiplying
we could not have been cross-multiplying
you could not have been cross-multiplying
they could not have been cross-multiplying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I cross-multiply?
could you cross-multiply?
could she cross-multiply?
could we cross-multiply?
could you cross-multiply?
could they cross-multiply? 	could I be cross-multiplying?
could you be cross-multiplying?
could she be cross-multiplying?
could we be cross-multiplying?
could you be cross-multiplying?
could they be cross-multiplying? 	could I have cross-multiplied?
could you have cross-multiplied?
could she have cross-multiplied?
could we have cross-multiplied?
could you have cross-multiplied?
could they have cross-multiplied? 	could I have been cross-multiplying?
could you have been cross-multiplying?
could she have been cross-multiplying?
could we have been cross-multiplying?
could you have been cross-multiplying?
could they have been cross-multiplying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not cross-multiply?
could you not cross-multiply?
could she not cross-multiply?
could we not cross-multiply?
could you not cross-multiply?
could they not cross-multiply? 	could I not be cross-multiplying?
could you not be cross-multiplying?
could she not be cross-multiplying?
could we not be cross-multiplying?
could you not be cross-multiplying?
could they not be cross-multiplying? 	could I not have cross-multiplied?
could you not have cross-multiplied?
could she not have cross-multiplied?
could we not have cross-multiplied?
could you not have cross-multiplied?
could they not have cross-multiplied? 	could I not have been cross-multiplying?
could you not have been cross-multiplying?
could she not have been cross-multiplying?
could we not have been cross-multiplying?
could you not have been cross-multiplying?
could they not have been cross-multiplying?