English verb conjugation
CAN MENTION

Regular verb: mention - mentioned - mentioned

Affirmation

Simple form	V-ing form
I can mention you can mention he can mention we can mention you can mention they can mention	I can be mentioning you can be mentioning he can be mentioning we can be mentioning you can be mentioning they can be mentioning
Perfect	V-ing perfect
I can have mentioned you can have mentioned he can have mentioned we can have mentioned you can have mentioned they can have mentioned	I can have been mentioning you can have been mentioning he can have been mentioning we can have been mentioning you can have been mentioning they can have been mentioning

Negation

Simple form	V-ing form
I cannot mention you cannot mention he cannot mention we cannot mention you cannot mention they cannot mention	I cannot be mentioning you cannot be mentioning he cannot be mentioning we cannot be mentioning you cannot be mentioning they cannot be mentioning
Perfect	V-ing perfect
I cannot have mentioned you cannot have mentioned he cannot have mentioned we cannot have mentioned you cannot have mentioned they cannot have mentioned	I cannot have been mentioning you cannot have been mentioning he cannot have been mentioning we cannot have been mentioning you cannot have been mentioning they cannot have been mentioning

Interrogative form

Simple form	V-ing form
can I mention? can you mention? can he mention? can we mention? can you mention? can they mention?	can I be mentioning? can you be mentioning? can he be mentioning? can we be mentioning? can you be mentioning? can they be mentioning?
Perfect	V-ing perfect
can I have mentioned? can you have mentioned? can he have mentioned? can we have mentioned? can you have mentioned? can they have mentioned?	can I have been mentioning? can you have been mentioning? can he have been mentioning? can we have been mentioning? can you have been mentioning? can they have been mentioning?

Interro-negative form

Simple form	V-ing form
can I not mention? can you not mention? can he not mention? can we not mention? can you not mention? can they not mention?	can I not be mentioning? can you not be mentioning? can he not be mentioning? can we not be mentioning? can you not be mentioning? can they not be mentioning?
Perfect	V-ing perfect
can I not have mentioned? can you not have mentioned? can he not have mentioned? can we not have mentioned? can you not have mentioned? can they not have mentioned?	can I not have been mentioning? can you not have been mentioning? can he not have been mentioning? can we not have been mentioning? can you not have been mentioning? can they not have been mentioning?