could telegraph
Regular verb: telegraph - telegraphed- telegraphed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could telegraph
you could telegraph
he could telegraph
we could telegraph
you could telegraph
they could telegraph 	I could be telegraphing
you could be telegraphing
he could be telegraphing
we could be telegraphing
you could be telegraphing
they could be telegraphing	I could have telegraphed
you could have telegraphed
he could have telegraphed
we could have telegraphed
you could have telegraphed
they could have telegraphed	I could have been telegraphing
you could have been telegraphing
he could have been telegraphing
we could have been telegraphing
you could have been telegraphing
they could have been telegraphing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't telegraph
you couldn't telegraph
he couldn't telegraph
we couldn't telegraph
you couldn't telegraph
they couldn't telegraph 	I couldn't be telegraphing
you couldn't be telegraphing
he couldn't be telegraphing
we couldn't be telegraphing
you couldn't be telegraphing
they couldn't be telegraphing	I couldn't have telegraphed
you couldn't have telegraphed
he couldn't have telegraphed
we couldn't have telegraphed
you couldn't have telegraphed
they couldn't have telegraphed	I couldn't have been telegraphing
you couldn't have been telegraphing
he couldn't have been telegraphing
we couldn't have been telegraphing
you couldn't have been telegraphing
they couldn't have been telegraphing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I telegraph?
could you telegraph?
could he telegraph?
could we telegraph?
could you telegraph?
could they telegraph? 	could I be telegraphing?
could you be telegraphing?
could he be telegraphing?
could we be telegraphing?
could you be telegraphing?
could they be telegraphing? 	could I have telegraphed?
could you have telegraphed?
could he have telegraphed?
could we have telegraphed?
could you have telegraphed?
could they have telegraphed? 	could I have been telegraphing?
could you have been telegraphing?
could he have been telegraphing?
could we have been telegraphing?
could you have been telegraphing?
could they have been telegraphing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I telegraph?
couldn't you telegraph?
couldn't he telegraph?
couldn't we telegraph?
couldn't you telegraph?
couldn't they telegraph? 	couldn't I be telegraphing?
couldn't you be telegraphing?
couldn't he be telegraphing?
couldn't we be telegraphing?
couldn't you be telegraphing?
couldn't they be telegraphing? 	couldn't I have telegraphed?
couldn't you have telegraphed?
couldn't he have telegraphed?
couldn't we have telegraphed?
couldn't you have telegraphed?
couldn't they have telegraphed? 	couldn't I have been telegraphing?
couldn't you have been telegraphing?
couldn't he have been telegraphing?
couldn't we have been telegraphing?
couldn't you have been telegraphing?
couldn't they have been telegraphing?