could debate
Regular verb: debate - debated- debated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could debate
you could debate
she could debate
we could debate
you could debate
they could debate 	I could be debating
you could be debating
she could be debating
we could be debating
you could be debating
they could be debating	I could have debated
you could have debated
she could have debated
we could have debated
you could have debated
they could have debated	I could have been debating
you could have been debating
she could have been debating
we could have been debating
you could have been debating
they could have been debating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't debate
you couldn't debate
she couldn't debate
we couldn't debate
you couldn't debate
they couldn't debate 	I couldn't be debating
you couldn't be debating
she couldn't be debating
we couldn't be debating
you couldn't be debating
they couldn't be debating	I couldn't have debated
you couldn't have debated
she couldn't have debated
we couldn't have debated
you couldn't have debated
they couldn't have debated	I couldn't have been debating
you couldn't have been debating
she couldn't have been debating
we couldn't have been debating
you couldn't have been debating
they couldn't have been debating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I debate?
could you debate?
could she debate?
could we debate?
could you debate?
could they debate? 	could I be debating?
could you be debating?
could she be debating?
could we be debating?
could you be debating?
could they be debating? 	could I have debated?
could you have debated?
could she have debated?
could we have debated?
could you have debated?
could they have debated? 	could I have been debating?
could you have been debating?
could she have been debating?
could we have been debating?
could you have been debating?
could they have been debating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I debate?
couldn't you debate?
couldn't she debate?
couldn't we debate?
couldn't you debate?
couldn't they debate? 	couldn't I be debating?
couldn't you be debating?
couldn't she be debating?
couldn't we be debating?
couldn't you be debating?
couldn't they be debating? 	couldn't I have debated?
couldn't you have debated?
couldn't she have debated?
couldn't we have debated?
couldn't you have debated?
couldn't they have debated? 	couldn't I have been debating?
couldn't you have been debating?
couldn't she have been debating?
couldn't we have been debating?
couldn't you have been debating?
couldn't they have been debating?