I must discourage you must discourage she must discourage we must discourage you must discourage they must discourage
V-ing form
I must be discouraging you must be discouraging she must be discouraging we must be discouraging you must be discouraging they must be discouraging
Perfect
I must have discouraged you must have discouraged she must have discouraged we must have discouraged you must have discouraged they must have discouraged
V-ing perfect
I must have been discouraging you must have been discouraging she must have been discouraging we must have been discouraging you must have been discouraging they must have been discouraging
Negation
Simple form
I must not discourage you must not discourage she must not discourage we must not discourage you must not discourage they must not discourage
V-ing form
I must not be discouraging you must not be discouraging she must not be discouraging we must not be discouraging you must not be discouraging they must not be discouraging
Perfect
I must not have discouraged you must not have discouraged she must not have discouraged we must not have discouraged you must not have discouraged they must not have discouraged
V-ing perfect
I must not have been discouraging you must not have been discouraging she must not have been discouraging we must not have been discouraging you must not have been discouraging they must not have been discouraging
Interrogative form
Simple form
must I discourage? must you discourage? must she discourage? must we discourage? must you discourage? must they discourage?
V-ing form
must I be discouraging? must you be discouraging? must she be discouraging? must we be discouraging? must you be discouraging? must they be discouraging?
Perfect
must I have discouraged? must you have discouraged? must she have discouraged? must we have discouraged? must you have discouraged? must they have discouraged?
V-ing perfect
must I have been discouraging? must you have been discouraging? must she have been discouraging? must we have been discouraging? must you have been discouraging? must they have been discouraging?
Interro-negative form
Simple form
must I not discourage? must you not discourage? must she not discourage? must we not discourage? must you not discourage? must they not discourage?
V-ing form
must I not be discouraging? must you not be discouraging? must she not be discouraging? must we not be discouraging? must you not be discouraging? must they not be discouraging?
Perfect
must I not have discouraged? must you not have discouraged? must she not have discouraged? must we not have discouraged? must you not have discouraged? must they not have discouraged?
V-ing perfect
must I not have been discouraging? must you not have been discouraging? must she not have been discouraging? must we not have been discouraging? must you not have been discouraging? must they not have been discouraging?