I must circumnavigate you must circumnavigate she must circumnavigate we must circumnavigate you must circumnavigate they must circumnavigate
V-ing form
I must be circumnavigating you must be circumnavigating she must be circumnavigating we must be circumnavigating you must be circumnavigating they must be circumnavigating
Perfect
I must have circumnavigated you must have circumnavigated she must have circumnavigated we must have circumnavigated you must have circumnavigated they must have circumnavigated
V-ing perfect
I must have been circumnavigating you must have been circumnavigating she must have been circumnavigating we must have been circumnavigating you must have been circumnavigating they must have been circumnavigating
Negation
Simple form
I mustn't circumnavigate you mustn't circumnavigate she mustn't circumnavigate we mustn't circumnavigate you mustn't circumnavigate they mustn't circumnavigate
V-ing form
I mustn't be circumnavigating you mustn't be circumnavigating she mustn't be circumnavigating we mustn't be circumnavigating you mustn't be circumnavigating they mustn't be circumnavigating
Perfect
I mustn't have circumnavigated you mustn't have circumnavigated she mustn't have circumnavigated we mustn't have circumnavigated you mustn't have circumnavigated they mustn't have circumnavigated
V-ing perfect
I mustn't have been circumnavigating you mustn't have been circumnavigating she mustn't have been circumnavigating we mustn't have been circumnavigating you mustn't have been circumnavigating they mustn't have been circumnavigating
Interrogative form
Simple form
must I circumnavigate? must you circumnavigate? must she circumnavigate? must we circumnavigate? must you circumnavigate? must they circumnavigate?
V-ing form
must I be circumnavigating? must you be circumnavigating? must she be circumnavigating? must we be circumnavigating? must you be circumnavigating? must they be circumnavigating?
Perfect
must I have circumnavigated? must you have circumnavigated? must she have circumnavigated? must we have circumnavigated? must you have circumnavigated? must they have circumnavigated?
V-ing perfect
must I have been circumnavigating? must you have been circumnavigating? must she have been circumnavigating? must we have been circumnavigating? must you have been circumnavigating? must they have been circumnavigating?
Interro-negative form
Simple form
mustn't I circumnavigate? mustn't you circumnavigate? mustn't she circumnavigate? mustn't we circumnavigate? mustn't you circumnavigate? mustn't they circumnavigate?
V-ing form
mustn't I be circumnavigating? mustn't you be circumnavigating? mustn't she be circumnavigating? mustn't we be circumnavigating? mustn't you be circumnavigating? mustn't they be circumnavigating?
Perfect
mustn't I have circumnavigated? mustn't you have circumnavigated? mustn't she have circumnavigated? mustn't we have circumnavigated? mustn't you have circumnavigated? mustn't they have circumnavigated?
V-ing perfect
mustn't I have been circumnavigating? mustn't you have been circumnavigating? mustn't she have been circumnavigating? mustn't we have been circumnavigating? mustn't you have been circumnavigating? mustn't they have been circumnavigating?