can telephone
Regular verb: telephone - telephoned- telephoned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can telephone
you can telephone
she can telephone
we can telephone
you can telephone
they can telephone 	I can be telephoning
you can be telephoning
she can be telephoning
we can be telephoning
you can be telephoning
they can be telephoning	I can have telephoned
you can have telephoned
she 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
she 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 	Perfect 	V-ing perfect 	
I can't telephone
you can't telephone
she 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
she can't be telephoning
we can't be telephoning
you can't be telephoning
they can't be telephoning	I can't have telephoned
you can't have telephoned
she 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
she 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 	Perfect 	V-ing perfect 	
can I telephone?
can you telephone?
can she telephone?
can we telephone?
can you telephone?
can they telephone? 	can I be telephoning?
can you be telephoning?
can she be telephoning?
can we be telephoning?
can you be telephoning?
can they be telephoning? 	can I have telephoned?
can you have telephoned?
can she 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 she 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 	Perfect 	V-ing perfect 	
can't I telephone?
can't you telephone?
can't she 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 she be telephoning?
can't we be telephoning?
can't you be telephoning?
can't they be telephoning? 	can't I have telephoned?
can't you have telephoned?
can't she 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 she have been telephoning?
can't we have been telephoning?
can't you have been telephoning?
can't they have been telephoning?