should telephone
Regular verb: telephone - telephoned- telephoned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd telephone
you'd telephone
he'd telephone
we'd telephone
you'd telephone
they'd telephone 	I'd be telephoning
you'd be telephoning
he'd be telephoning
we'd be telephoning
you'd be telephoning
they'd be telephoning	I should've telephoned
you should've telephoned
he should've telephoned
we should've telephoned
you should've telephoned
they should've telephoned	I should've been telephoning
you should've been telephoning
he should've been telephoning
we should've been telephoning
you should've been telephoning
they should've been telephoning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't telephone
you shouldn't telephone
he shouldn't telephone
we shouldn't telephone
you shouldn't telephone
they shouldn't telephone 	I shouldn't be telephoning
you shouldn't be telephoning
he shouldn't be telephoning
we shouldn't be telephoning
you shouldn't be telephoning
they shouldn't be telephoning	I shouldn't have telephoned
you shouldn't have telephoned
he shouldn't have telephoned
we shouldn't have telephoned
you shouldn't have telephoned
they shouldn't have telephoned	I shouldn't have been telephoning
you shouldn't have been telephoning
he shouldn't have been telephoning
we shouldn't have been telephoning
you shouldn't have been telephoning
they shouldn't have been telephoning	

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

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I telephone?
shouldn't you telephone?
shouldn't he telephone?
shouldn't we telephone?
shouldn't you telephone?
shouldn't they telephone? 	shouldn't I be telephoning?
shouldn't you be telephoning?
shouldn't he be telephoning?
shouldn't we be telephoning?
shouldn't you be telephoning?
shouldn't they be telephoning? 	shouldn't I have telephoned?
shouldn't you have telephoned?
shouldn't he have telephoned?
shouldn't we have telephoned?
shouldn't you have telephoned?
shouldn't they have telephoned? 	shouldn't I have been telephoning?
shouldn't you have been telephoning?
shouldn't he have been telephoning?
shouldn't we have been telephoning?
shouldn't you have been telephoning?
shouldn't they have been telephoning?