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