English verb conjugation
MUST CALCULATE

Regular verb: calculate - calculated - calculated

Affirmation

Simple form	V-ing form
I must calculate you must calculate he must calculate we must calculate you must calculate they must calculate	I must be calculating you must be calculating he must be calculating we must be calculating you must be calculating they must be calculating
Perfect	V-ing perfect
I must have calculated you must have calculated he must have calculated we must have calculated you must have calculated they must have calculated	I must have been calculating you must have been calculating he must have been calculating we must have been calculating you must have been calculating they must have been calculating

Negation

Simple form	V-ing form
I must not calculate you must not calculate he must not calculate we must not calculate you must not calculate they must not calculate	I must not be calculating you must not be calculating he must not be calculating we must not be calculating you must not be calculating they must not be calculating
Perfect	V-ing perfect
I must not have calculated you must not have calculated he must not have calculated we must not have calculated you must not have calculated they must not have calculated	I must not have been calculating you must not have been calculating he must not have been calculating we must not have been calculating you must not have been calculating they must not have been calculating

Interrogative form

Simple form	V-ing form
must I calculate? must you calculate? must he calculate? must we calculate? must you calculate? must they calculate?	must I be calculating? must you be calculating? must he be calculating? must we be calculating? must you be calculating? must they be calculating?
Perfect	V-ing perfect
must I have calculated? must you have calculated? must he have calculated? must we have calculated? must you have calculated? must they have calculated?	must I have been calculating? must you have been calculating? must he have been calculating? must we have been calculating? must you have been calculating? must they have been calculating?

Interro-negative form

Simple form	V-ing form
must I not calculate? must you not calculate? must he not calculate? must we not calculate? must you not calculate? must they not calculate?	must I not be calculating? must you not be calculating? must he not be calculating? must we not be calculating? must you not be calculating? must they not be calculating?
Perfect	V-ing perfect
must I not have calculated? must you not have calculated? must he not have calculated? must we not have calculated? must you not have calculated? must they not have calculated?	must I not have been calculating? must you not have been calculating? must he not have been calculating? must we not have been calculating? must you not have been calculating? must they not have been calculating?