could mention
Regular verb: mention - mentioned- mentioned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could mention
you could mention
she could mention
we could mention
you could mention
they could mention 	I could be mentioning
you could be mentioning
she could be mentioning
we could be mentioning
you could be mentioning
they could be mentioning	I could have mentioned
you could have mentioned
she could have mentioned
we could have mentioned
you could have mentioned
they could have mentioned	I could have been mentioning
you could have been mentioning
she could have been mentioning
we could have been mentioning
you could have been mentioning
they could have been mentioning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't mention
you couldn't mention
she couldn't mention
we couldn't mention
you couldn't mention
they couldn't mention 	I couldn't be mentioning
you couldn't be mentioning
she couldn't be mentioning
we couldn't be mentioning
you couldn't be mentioning
they couldn't be mentioning	I couldn't have mentioned
you couldn't have mentioned
she couldn't have mentioned
we couldn't have mentioned
you couldn't have mentioned
they couldn't have mentioned	I couldn't have been mentioning
you couldn't have been mentioning
she couldn't have been mentioning
we couldn't have been mentioning
you couldn't have been mentioning
they couldn't have been mentioning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I mention?
could you mention?
could she mention?
could we mention?
could you mention?
could they mention? 	could I be mentioning?
could you be mentioning?
could she be mentioning?
could we be mentioning?
could you be mentioning?
could they be mentioning? 	could I have mentioned?
could you have mentioned?
could she have mentioned?
could we have mentioned?
could you have mentioned?
could they have mentioned? 	could I have been mentioning?
could you have been mentioning?
could she have been mentioning?
could we have been mentioning?
could you have been mentioning?
could they have been mentioning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I mention?
couldn't you mention?
couldn't she mention?
couldn't we mention?
couldn't you mention?
couldn't they mention? 	couldn't I be mentioning?
couldn't you be mentioning?
couldn't she be mentioning?
couldn't we be mentioning?
couldn't you be mentioning?
couldn't they be mentioning? 	couldn't I have mentioned?
couldn't you have mentioned?
couldn't she have mentioned?
couldn't we have mentioned?
couldn't you have mentioned?
couldn't they have mentioned? 	couldn't I have been mentioning?
couldn't you have been mentioning?
couldn't she have been mentioning?
couldn't we have been mentioning?
couldn't you have been mentioning?
couldn't they have been mentioning?