I must aerate you must aerate she must aerate we must aerate you must aerate they must aerate
V-ing form
I must be aerating you must be aerating she must be aerating we must be aerating you must be aerating they must be aerating
Perfect
I must have aerated you must have aerated she must have aerated we must have aerated you must have aerated they must have aerated
V-ing perfect
I must have been aerating you must have been aerating she must have been aerating we must have been aerating you must have been aerating they must have been aerating
Negation
Simple form
I must not aerate you must not aerate she must not aerate we must not aerate you must not aerate they must not aerate
V-ing form
I must not be aerating you must not be aerating she must not be aerating we must not be aerating you must not be aerating they must not be aerating
Perfect
I must not have aerated you must not have aerated she must not have aerated we must not have aerated you must not have aerated they must not have aerated
V-ing perfect
I must not have been aerating you must not have been aerating she must not have been aerating we must not have been aerating you must not have been aerating they must not have been aerating
Interrogative form
Simple form
must I aerate? must you aerate? must she aerate? must we aerate? must you aerate? must they aerate?
V-ing form
must I be aerating? must you be aerating? must she be aerating? must we be aerating? must you be aerating? must they be aerating?
Perfect
must I have aerated? must you have aerated? must she have aerated? must we have aerated? must you have aerated? must they have aerated?
V-ing perfect
must I have been aerating? must you have been aerating? must she have been aerating? must we have been aerating? must you have been aerating? must they have been aerating?
Interro-negative form
Simple form
must I not aerate? must you not aerate? must she not aerate? must we not aerate? must you not aerate? must they not aerate?
V-ing form
must I not be aerating? must you not be aerating? must she not be aerating? must we not be aerating? must you not be aerating? must they not be aerating?
Perfect
must I not have aerated? must you not have aerated? must she not have aerated? must we not have aerated? must you not have aerated? must they not have aerated?
V-ing perfect
must I not have been aerating? must you not have been aerating? must she not have been aerating? must we not have been aerating? must you not have been aerating? must they not have been aerating?