I can radiotelegraph you can radiotelegraph she can radiotelegraph we can radiotelegraph you can radiotelegraph they can radiotelegraph
V-ing form
I can be radiotelegraphing you can be radiotelegraphing she can be radiotelegraphing we can be radiotelegraphing you can be radiotelegraphing they can be radiotelegraphing
Perfect
I can have radiotelegraphed you can have radiotelegraphed she can have radiotelegraphed we can have radiotelegraphed you can have radiotelegraphed they can have radiotelegraphed
V-ing perfect
I can have been radiotelegraphing you can have been radiotelegraphing she can have been radiotelegraphing we can have been radiotelegraphing you can have been radiotelegraphing they can have been radiotelegraphing
Negation
Simple form
I can't radiotelegraph you can't radiotelegraph she can't radiotelegraph we can't radiotelegraph you can't radiotelegraph they can't radiotelegraph
V-ing form
I can't be radiotelegraphing you can't be radiotelegraphing she can't be radiotelegraphing we can't be radiotelegraphing you can't be radiotelegraphing they can't be radiotelegraphing
Perfect
I can't have radiotelegraphed you can't have radiotelegraphed she can't have radiotelegraphed we can't have radiotelegraphed you can't have radiotelegraphed they can't have radiotelegraphed
V-ing perfect
I can't have been radiotelegraphing you can't have been radiotelegraphing she can't have been radiotelegraphing we can't have been radiotelegraphing you can't have been radiotelegraphing they can't have been radiotelegraphing
Interrogative form
Simple form
can I radiotelegraph? can you radiotelegraph? can she radiotelegraph? can we radiotelegraph? can you radiotelegraph? can they radiotelegraph?
V-ing form
can I be radiotelegraphing? can you be radiotelegraphing? can she be radiotelegraphing? can we be radiotelegraphing? can you be radiotelegraphing? can they be radiotelegraphing?
Perfect
can I have radiotelegraphed? can you have radiotelegraphed? can she have radiotelegraphed? can we have radiotelegraphed? can you have radiotelegraphed? can they have radiotelegraphed?
V-ing perfect
can I have been radiotelegraphing? can you have been radiotelegraphing? can she have been radiotelegraphing? can we have been radiotelegraphing? can you have been radiotelegraphing? can they have been radiotelegraphing?
Interro-negative form
Simple form
can't I radiotelegraph? can't you radiotelegraph? can't she radiotelegraph? can't we radiotelegraph? can't you radiotelegraph? can't they radiotelegraph?
V-ing form
can't I be radiotelegraphing? can't you be radiotelegraphing? can't she be radiotelegraphing? can't we be radiotelegraphing? can't you be radiotelegraphing? can't they be radiotelegraphing?
Perfect
can't I have radiotelegraphed? can't you have radiotelegraphed? can't she have radiotelegraphed? can't we have radiotelegraphed? can't you have radiotelegraphed? can't they have radiotelegraphed?
V-ing perfect
can't I have been radiotelegraphing? can't you have been radiotelegraphing? can't she have been radiotelegraphing? can't we have been radiotelegraphing? can't you have been radiotelegraphing? can't they have been radiotelegraphing?