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 	
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I couldn't urinate
you couldn't urinate
he couldn't urinate
we couldn't urinate
you couldn't urinate
they couldn't urinate 	I couldn't be urinating
you couldn't be urinating
he couldn't be urinating
we couldn't be urinating
you couldn't be urinating
they couldn't be urinating	I couldn't have urinated
you couldn't have urinated
he couldn't have urinated
we couldn't have urinated
you couldn't have urinated
they couldn't have urinated	I couldn't have been urinating
you couldn't have been urinating
he couldn't have been urinating
we couldn't have been urinating
you couldn't have been urinating
they couldn't 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 	
couldn't I urinate?
couldn't you urinate?
couldn't he urinate?
couldn't we urinate?
couldn't you urinate?
couldn't they urinate? 	couldn't I be urinating?
couldn't you be urinating?
couldn't he be urinating?
couldn't we be urinating?
couldn't you be urinating?
couldn't they be urinating? 	couldn't I have urinated?
couldn't you have urinated?
couldn't he have urinated?
couldn't we have urinated?
couldn't you have urinated?
couldn't they have urinated? 	couldn't I have been urinating?
couldn't you have been urinating?
couldn't he have been urinating?
couldn't we have been urinating?
couldn't you have been urinating?
couldn't they have been urinating?