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 can't telephone you can't telephone he can't telephone we can't telephone you can't telephone they can't telephone	I can't be telephoning you can't be telephoning he can't be telephoning we can't be telephoning you can't be telephoning they can't be telephoning
Perfect	V-ing perfect
I can't have telephoned you can't have telephoned he can't have telephoned we can't have telephoned you can't have telephoned they can't have telephoned	I can't have been telephoning you can't have been telephoning he can't have been telephoning we can't have been telephoning you can't have been telephoning they can't 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't I telephone? can't you telephone? can't he telephone? can't we telephone? can't you telephone? can't they telephone?	can't I be telephoning? can't you be telephoning? can't he be telephoning? can't we be telephoning? can't you be telephoning? can't they be telephoning?
Perfect	V-ing perfect
can't I have telephoned? can't you have telephoned? can't he have telephoned? can't we have telephoned? can't you have telephoned? can't they have telephoned?	can't I have been telephoning? can't you have been telephoning? can't he have been telephoning? can't we have been telephoning? can't you have been telephoning? can't they have been telephoning?