I must telegraph you must telegraph she must telegraph we must telegraph you must telegraph they must telegraph
V-ing form
I must be telegraphing you must be telegraphing she must be telegraphing we must be telegraphing you must be telegraphing they must be telegraphing
Perfect
I must have telegraphed you must have telegraphed she must have telegraphed we must have telegraphed you must have telegraphed they must have telegraphed
V-ing perfect
I must have been telegraphing you must have been telegraphing she must have been telegraphing we must have been telegraphing you must have been telegraphing they must have been telegraphing
Negation
Simple form
I must not telegraph you must not telegraph she must not telegraph we must not telegraph you must not telegraph they must not telegraph
V-ing form
I must not be telegraphing you must not be telegraphing she must not be telegraphing we must not be telegraphing you must not be telegraphing they must not be telegraphing
Perfect
I must not have telegraphed you must not have telegraphed she must not have telegraphed we must not have telegraphed you must not have telegraphed they must not have telegraphed
V-ing perfect
I must not have been telegraphing you must not have been telegraphing she must not have been telegraphing we must not have been telegraphing you must not have been telegraphing they must not have been telegraphing
Interrogative form
Simple form
must I telegraph? must you telegraph? must she telegraph? must we telegraph? must you telegraph? must they telegraph?
V-ing form
must I be telegraphing? must you be telegraphing? must she be telegraphing? must we be telegraphing? must you be telegraphing? must they be telegraphing?
Perfect
must I have telegraphed? must you have telegraphed? must she have telegraphed? must we have telegraphed? must you have telegraphed? must they have telegraphed?
V-ing perfect
must I have been telegraphing? must you have been telegraphing? must she have been telegraphing? must we have been telegraphing? must you have been telegraphing? must they have been telegraphing?
Interro-negative form
Simple form
must I not telegraph? must you not telegraph? must she not telegraph? must we not telegraph? must you not telegraph? must they not telegraph?
V-ing form
must I not be telegraphing? must you not be telegraphing? must she not be telegraphing? must we not be telegraphing? must you not be telegraphing? must they not be telegraphing?
Perfect
must I not have telegraphed? must you not have telegraphed? must she not have telegraphed? must we not have telegraphed? must you not have telegraphed? must they not have telegraphed?
V-ing perfect
must I not have been telegraphing? must you not have been telegraphing? must she not have been telegraphing? must we not have been telegraphing? must you not have been telegraphing? must they not have been telegraphing?