could combat
Regular verb: combat - combated- combated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could combat
you could combat
he could combat
we could combat
you could combat
they could combat 	I could be combating
you could be combating
he could be combating
we could be combating
you could be combating
they could be combating	I could have combated
you could have combated
he could have combated
we could have combated
you could have combated
they could have combated	I could have been combating
you could have been combating
he could have been combating
we could have been combating
you could have been combating
they could have been combating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't combat
you couldn't combat
he couldn't combat
we couldn't combat
you couldn't combat
they couldn't combat 	I couldn't be combating
you couldn't be combating
he couldn't be combating
we couldn't be combating
you couldn't be combating
they couldn't be combating	I couldn't have combated
you couldn't have combated
he couldn't have combated
we couldn't have combated
you couldn't have combated
they couldn't have combated	I couldn't have been combating
you couldn't have been combating
he couldn't have been combating
we couldn't have been combating
you couldn't have been combating
they couldn't have been combating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I combat?
could you combat?
could he combat?
could we combat?
could you combat?
could they combat? 	could I be combating?
could you be combating?
could he be combating?
could we be combating?
could you be combating?
could they be combating? 	could I have combated?
could you have combated?
could he have combated?
could we have combated?
could you have combated?
could they have combated? 	could I have been combating?
could you have been combating?
could he have been combating?
could we have been combating?
could you have been combating?
could they have been combating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I combat?
couldn't you combat?
couldn't he combat?
couldn't we combat?
couldn't you combat?
couldn't they combat? 	couldn't I be combating?
couldn't you be combating?
couldn't he be combating?
couldn't we be combating?
couldn't you be combating?
couldn't they be combating? 	couldn't I have combated?
couldn't you have combated?
couldn't he have combated?
couldn't we have combated?
couldn't you have combated?
couldn't they have combated? 	couldn't I have been combating?
couldn't you have been combating?
couldn't he have been combating?
couldn't we have been combating?
couldn't you have been combating?
couldn't they have been combating?