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 mustn't calculate you mustn't calculate he mustn't calculate we mustn't calculate you mustn't calculate they mustn't calculate	I mustn't be calculating you mustn't be calculating he mustn't be calculating we mustn't be calculating you mustn't be calculating they mustn't be calculating
Perfect	V-ing perfect
I mustn't have calculated you mustn't have calculated he mustn't have calculated we mustn't have calculated you mustn't have calculated they mustn't have calculated	I mustn't have been calculating you mustn't have been calculating he mustn't have been calculating we mustn't have been calculating you mustn't have been calculating they mustn't 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
mustn't I calculate? mustn't you calculate? mustn't he calculate? mustn't we calculate? mustn't you calculate? mustn't they calculate?	mustn't I be calculating? mustn't you be calculating? mustn't he be calculating? mustn't we be calculating? mustn't you be calculating? mustn't they be calculating?
Perfect	V-ing perfect
mustn't I have calculated? mustn't you have calculated? mustn't he have calculated? mustn't we have calculated? mustn't you have calculated? mustn't they have calculated?	mustn't I have been calculating? mustn't you have been calculating? mustn't he have been calculating? mustn't we have been calculating? mustn't you have been calculating? mustn't they have been calculating?