English verb conjugation
MAY CALCULATE

Regular verb: calculate - calculated - calculated

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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