Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I must staking you must staking he must staking we must staking you must staking they must staking
V-ing form
I must be stakinging you must be stakinging he must be stakinging we must be stakinging you must be stakinging they must be stakinging
Perfect
I must have stakinged you must have stakinged he must have stakinged we must have stakinged you must have stakinged they must have stakinged
V-ing perfect
I must have been stakinging you must have been stakinging he must have been stakinging we must have been stakinging you must have been stakinging they must have been stakinging
Negation
Simple form
I must not staking you must not staking he must not staking we must not staking you must not staking they must not staking
V-ing form
I must not be stakinging you must not be stakinging he must not be stakinging we must not be stakinging you must not be stakinging they must not be stakinging
Perfect
I must not have stakinged you must not have stakinged he must not have stakinged we must not have stakinged you must not have stakinged they must not have stakinged
V-ing perfect
I must not have been stakinging you must not have been stakinging he must not have been stakinging we must not have been stakinging you must not have been stakinging they must not have been stakinging
Interrogative form
Simple form
must I staking? must you staking? must he staking? must we staking? must you staking? must they staking?
V-ing form
must I be stakinging? must you be stakinging? must he be stakinging? must we be stakinging? must you be stakinging? must they be stakinging?
Perfect
must I have stakinged? must you have stakinged? must he have stakinged? must we have stakinged? must you have stakinged? must they have stakinged?
V-ing perfect
must I have been stakinging? must you have been stakinging? must he have been stakinging? must we have been stakinging? must you have been stakinging? must they have been stakinging?
Interro-negative form
Simple form
must I not staking? must you not staking? must he not staking? must we not staking? must you not staking? must they not staking?
V-ing form
must I not be stakinging? must you not be stakinging? must he not be stakinging? must we not be stakinging? must you not be stakinging? must they not be stakinging?
Perfect
must I not have stakinged? must you not have stakinged? must he not have stakinged? must we not have stakinged? must you not have stakinged? must they not have stakinged?
V-ing perfect
must I not have been stakinging? must you not have been stakinging? must he not have been stakinging? must we not have been stakinging? must you not have been stakinging? must they not have been stakinging?