English verb conjugation
MAY COMBUST

Regular verb: combust - combusted - combusted

Affirmation

Simple form	V-ing form
I may combust you may combust he may combust we may combust you may combust they may combust	I may be combusting you may be combusting he 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 he 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 he 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 he 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 he 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 he 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 he 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 he combust? may we combust? may you combust? may they combust?	may I be combusting? may you be combusting? may he 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 he 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 he 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 he 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 he 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 he 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 he have been combusting? mayn't we have been combusting? mayn't you have been combusting? mayn't they have been combusting?