could urinate
Regular verb: urinate - urinated- urinated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could urinate
you could urinate
he could urinate
we could urinate
you could urinate
they could urinate 	I could be urinating
you could be urinating
he could be urinating
we could be urinating
you could be urinating
they could be urinating	I could have urinated
you could have urinated
he could have urinated
we could have urinated
you could have urinated
they could have urinated	I could have been urinating
you could have been urinating
he could have been urinating
we could have been urinating
you could have been urinating
they could have been urinating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not urinate
you could not urinate
he could not urinate
we could not urinate
you could not urinate
they could not urinate 	I could not be urinating
you could not be urinating
he could not be urinating
we could not be urinating
you could not be urinating
they could not be urinating	I could not have urinated
you could not have urinated
he could not have urinated
we could not have urinated
you could not have urinated
they could not have urinated	I could not have been urinating
you could not have been urinating
he could not have been urinating
we could not have been urinating
you could not have been urinating
they could not have been urinating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I urinate?
could you urinate?
could he urinate?
could we urinate?
could you urinate?
could they urinate? 	could I be urinating?
could you be urinating?
could he be urinating?
could we be urinating?
could you be urinating?
could they be urinating? 	could I have urinated?
could you have urinated?
could he have urinated?
could we have urinated?
could you have urinated?
could they have urinated? 	could I have been urinating?
could you have been urinating?
could he have been urinating?
could we have been urinating?
could you have been urinating?
could they have been urinating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not urinate?
could you not urinate?
could he not urinate?
could we not urinate?
could you not urinate?
could they not urinate? 	could I not be urinating?
could you not be urinating?
could he not be urinating?
could we not be urinating?
could you not be urinating?
could they not be urinating? 	could I not have urinated?
could you not have urinated?
could he not have urinated?
could we not have urinated?
could you not have urinated?
could they not have urinated? 	could I not have been urinating?
could you not have been urinating?
could he not have been urinating?
could we not have been urinating?
could you not have been urinating?
could they not have been urinating?