English verb conjugation
CAN TELEPHONE

Regular verb: telephone - telephoned - telephoned

Affirmation

Simple form	V-ing form
I can telephone you can telephone he can telephone we can telephone you can telephone they can telephone	I can be telephoning you can be telephoning he can be telephoning we can be telephoning you can be telephoning they can be telephoning
Perfect	V-ing perfect
I can have telephoned you can have telephoned he can have telephoned we can have telephoned you can have telephoned they can have telephoned	I can have been telephoning you can have been telephoning he can have been telephoning we can have been telephoning you can have been telephoning they can have been telephoning

Negation

Simple form	V-ing form
I cannot telephone you cannot telephone he cannot telephone we cannot telephone you cannot telephone they cannot telephone	I cannot be telephoning you cannot be telephoning he cannot be telephoning we cannot be telephoning you cannot be telephoning they cannot be telephoning
Perfect	V-ing perfect
I cannot have telephoned you cannot have telephoned he cannot have telephoned we cannot have telephoned you cannot have telephoned they cannot have telephoned	I cannot have been telephoning you cannot have been telephoning he cannot have been telephoning we cannot have been telephoning you cannot have been telephoning they cannot have been telephoning

Interrogative form

Simple form	V-ing form
can I telephone? can you telephone? can he telephone? can we telephone? can you telephone? can they telephone?	can I be telephoning? can you be telephoning? can he be telephoning? can we be telephoning? can you be telephoning? can they be telephoning?
Perfect	V-ing perfect
can I have telephoned? can you have telephoned? can he have telephoned? can we have telephoned? can you have telephoned? can they have telephoned?	can I have been telephoning? can you have been telephoning? can he have been telephoning? can we have been telephoning? can you have been telephoning? can they have been telephoning?

Interro-negative form

Simple form	V-ing form
can I not telephone? can you not telephone? can he not telephone? can we not telephone? can you not telephone? can they not telephone?	can I not be telephoning? can you not be telephoning? can he not be telephoning? can we not be telephoning? can you not be telephoning? can they not be telephoning?
Perfect	V-ing perfect
can I not have telephoned? can you not have telephoned? can he not have telephoned? can we not have telephoned? can you not have telephoned? can they not have telephoned?	can I not have been telephoning? can you not have been telephoning? can he not have been telephoning? can we not have been telephoning? can you not have been telephoning? can they not have been telephoning?