could consume
Regular verb: consume - consumed- consumed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could consume
you could consume
she could consume
we could consume
you could consume
they could consume 	I could be consuming
you could be consuming
she could be consuming
we could be consuming
you could be consuming
they could be consuming	I could have consumed
you could have consumed
she could have consumed
we could have consumed
you could have consumed
they could have consumed	I could have been consuming
you could have been consuming
she could have been consuming
we could have been consuming
you could have been consuming
they could have been consuming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't consume
you couldn't consume
she couldn't consume
we couldn't consume
you couldn't consume
they couldn't consume 	I couldn't be consuming
you couldn't be consuming
she couldn't be consuming
we couldn't be consuming
you couldn't be consuming
they couldn't be consuming	I couldn't have consumed
you couldn't have consumed
she couldn't have consumed
we couldn't have consumed
you couldn't have consumed
they couldn't have consumed	I couldn't have been consuming
you couldn't have been consuming
she couldn't have been consuming
we couldn't have been consuming
you couldn't have been consuming
they couldn't have been consuming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I consume?
could you consume?
could she consume?
could we consume?
could you consume?
could they consume? 	could I be consuming?
could you be consuming?
could she be consuming?
could we be consuming?
could you be consuming?
could they be consuming? 	could I have consumed?
could you have consumed?
could she have consumed?
could we have consumed?
could you have consumed?
could they have consumed? 	could I have been consuming?
could you have been consuming?
could she have been consuming?
could we have been consuming?
could you have been consuming?
could they have been consuming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I consume?
couldn't you consume?
couldn't she consume?
couldn't we consume?
couldn't you consume?
couldn't they consume? 	couldn't I be consuming?
couldn't you be consuming?
couldn't she be consuming?
couldn't we be consuming?
couldn't you be consuming?
couldn't they be consuming? 	couldn't I have consumed?
couldn't you have consumed?
couldn't she have consumed?
couldn't we have consumed?
couldn't you have consumed?
couldn't they have consumed? 	couldn't I have been consuming?
couldn't you have been consuming?
couldn't she have been consuming?
couldn't we have been consuming?
couldn't you have been consuming?
couldn't they have been consuming?