English verb conjugation
MAY COMBINE

Regular verb: combine - combined - combined

Affirmation

Simple form	V-ing form
I may combine you may combine she may combine we may combine you may combine they may combine	I may be combining you may be combining she may be combining we may be combining you may be combining they may be combining
Perfect	V-ing perfect
I may have combined you may have combined she may have combined we may have combined you may have combined they may have combined	I may have been combining you may have been combining she may have been combining we may have been combining you may have been combining they may have been combining

Negation

Simple form	V-ing form
I may not combine you may not combine she may not combine we may not combine you may not combine they may not combine	I may not be combining you may not be combining she may not be combining we may not be combining you may not be combining they may not be combining
Perfect	V-ing perfect
I may not have combined you may not have combined she may not have combined we may not have combined you may not have combined they may not have combined	I may not have been combining you may not have been combining she may not have been combining we may not have been combining you may not have been combining they may not have been combining

Interrogative form

Simple form	V-ing form
may I combine? may you combine? may she combine? may we combine? may you combine? may they combine?	may I be combining? may you be combining? may she be combining? may we be combining? may you be combining? may they be combining?
Perfect	V-ing perfect
may I have combined? may you have combined? may she have combined? may we have combined? may you have combined? may they have combined?	may I have been combining? may you have been combining? may she have been combining? may we have been combining? may you have been combining? may they have been combining?

Interro-negative form

Simple form	V-ing form
may I not combine? may you not combine? may she not combine? may we not combine? may you not combine? may they not combine?	may I not be combining? may you not be combining? may she not be combining? may we not be combining? may you not be combining? may they not be combining?
Perfect	V-ing perfect
may I not have combined? may you not have combined? may she not have combined? may we not have combined? may you not have combined? may they not have combined?	may I not have been combining? may you not have been combining? may she not have been combining? may we not have been combining? may you not have been combining? may they not have been combining?