English verb conjugation
MAY COMBUST

Regular verb: combust - combusted - combusted

Affirmation

Simple form	V-ing form
I may combust you may combust she may combust we may combust you may combust they may combust	I may be combusting you may be combusting she may be combusting we may be combusting you may be combusting they may be combusting
Perfect	V-ing perfect
I may have combusted you may have combusted she may have combusted we may have combusted you may have combusted they may have combusted	I may have been combusting you may have been combusting she may have been combusting we may have been combusting you may have been combusting they may have been combusting

Negation

Simple form	V-ing form
I mayn't combust you mayn't combust she mayn't combust we mayn't combust you mayn't combust they mayn't combust	I mayn't be combusting you mayn't be combusting she mayn't be combusting we mayn't be combusting you mayn't be combusting they mayn't be combusting
Perfect	V-ing perfect
I mayn't have combusted you mayn't have combusted she mayn't have combusted we mayn't have combusted you mayn't have combusted they mayn't have combusted	I mayn't have been combusting you mayn't have been combusting she mayn't have been combusting we mayn't have been combusting you mayn't have been combusting they mayn't have been combusting

Interrogative form

Simple form	V-ing form
may I combust? may you combust? may she combust? may we combust? may you combust? may they combust?	may I be combusting? may you be combusting? may she be combusting? may we be combusting? may you be combusting? may they be combusting?
Perfect	V-ing perfect
may I have combusted? may you have combusted? may she have combusted? may we have combusted? may you have combusted? may they have combusted?	may I have been combusting? may you have been combusting? may she have been combusting? may we have been combusting? may you have been combusting? may they have been combusting?

Interro-negative form

Simple form	V-ing form
mayn't I combust? mayn't you combust? mayn't she combust? mayn't we combust? mayn't you combust? mayn't they combust?	mayn't I be combusting? mayn't you be combusting? mayn't she be combusting? mayn't we be combusting? mayn't you be combusting? mayn't they be combusting?
Perfect	V-ing perfect
mayn't I have combusted? mayn't you have combusted? mayn't she have combusted? mayn't we have combusted? mayn't you have combusted? mayn't they have combusted?	mayn't I have been combusting? mayn't you have been combusting? mayn't she have been combusting? mayn't we have been combusting? mayn't you have been combusting? mayn't they have been combusting?