I must castigate you must castigate she must castigate we must castigate you must castigate they must castigate
V-ing form
I must be castigating you must be castigating she must be castigating we must be castigating you must be castigating they must be castigating
Perfect
I must have castigated you must have castigated she must have castigated we must have castigated you must have castigated they must have castigated
V-ing perfect
I must have been castigating you must have been castigating she must have been castigating we must have been castigating you must have been castigating they must have been castigating
Negation
Simple form
I must not castigate you must not castigate she must not castigate we must not castigate you must not castigate they must not castigate
V-ing form
I must not be castigating you must not be castigating she must not be castigating we must not be castigating you must not be castigating they must not be castigating
Perfect
I must not have castigated you must not have castigated she must not have castigated we must not have castigated you must not have castigated they must not have castigated
V-ing perfect
I must not have been castigating you must not have been castigating she must not have been castigating we must not have been castigating you must not have been castigating they must not have been castigating
Interrogative form
Simple form
must I castigate? must you castigate? must she castigate? must we castigate? must you castigate? must they castigate?
V-ing form
must I be castigating? must you be castigating? must she be castigating? must we be castigating? must you be castigating? must they be castigating?
Perfect
must I have castigated? must you have castigated? must she have castigated? must we have castigated? must you have castigated? must they have castigated?
V-ing perfect
must I have been castigating? must you have been castigating? must she have been castigating? must we have been castigating? must you have been castigating? must they have been castigating?
Interro-negative form
Simple form
must I not castigate? must you not castigate? must she not castigate? must we not castigate? must you not castigate? must they not castigate?
V-ing form
must I not be castigating? must you not be castigating? must she not be castigating? must we not be castigating? must you not be castigating? must they not be castigating?
Perfect
must I not have castigated? must you not have castigated? must she not have castigated? must we not have castigated? must you not have castigated? must they not have castigated?
V-ing perfect
must I not have been castigating? must you not have been castigating? must she not have been castigating? must we not have been castigating? must you not have been castigating? must they not have been castigating?