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 mayn't combine you mayn't combine she mayn't combine we mayn't combine you mayn't combine they mayn't combine	I mayn't be combining you mayn't be combining she mayn't be combining we mayn't be combining you mayn't be combining they mayn't be combining
Perfect	V-ing perfect
I mayn't have combined you mayn't have combined she mayn't have combined we mayn't have combined you mayn't have combined they mayn't have combined	I mayn't have been combining you mayn't have been combining she mayn't have been combining we mayn't have been combining you mayn't have been combining they mayn't 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
mayn't I combine? mayn't you combine? mayn't she combine? mayn't we combine? mayn't you combine? mayn't they combine?	mayn't I be combining? mayn't you be combining? mayn't she be combining? mayn't we be combining? mayn't you be combining? mayn't they be combining?
Perfect	V-ing perfect
mayn't I have combined? mayn't you have combined? mayn't she have combined? mayn't we have combined? mayn't you have combined? mayn't they have combined?	mayn't I have been combining? mayn't you have been combining? mayn't she have been combining? mayn't we have been combining? mayn't you have been combining? mayn't they have been combining?