English verb conjugation
MAY CHECKMATE

Regular verb: checkmate - checkmated - checkmated

Affirmation

Simple form	V-ing form
I may checkmate you may checkmate he may checkmate we may checkmate you may checkmate they may checkmate	I may be checkmating you may be checkmating he may be checkmating we may be checkmating you may be checkmating they may be checkmating
Perfect	V-ing perfect
I may have checkmated you may have checkmated he may have checkmated we may have checkmated you may have checkmated they may have checkmated	I may have been checkmating you may have been checkmating he may have been checkmating we may have been checkmating you may have been checkmating they may have been checkmating

Negation

Simple form	V-ing form
I mayn't checkmate you mayn't checkmate he mayn't checkmate we mayn't checkmate you mayn't checkmate they mayn't checkmate	I mayn't be checkmating you mayn't be checkmating he mayn't be checkmating we mayn't be checkmating you mayn't be checkmating they mayn't be checkmating
Perfect	V-ing perfect
I mayn't have checkmated you mayn't have checkmated he mayn't have checkmated we mayn't have checkmated you mayn't have checkmated they mayn't have checkmated	I mayn't have been checkmating you mayn't have been checkmating he mayn't have been checkmating we mayn't have been checkmating you mayn't have been checkmating they mayn't have been checkmating

Interrogative form

Simple form	V-ing form
may I checkmate? may you checkmate? may he checkmate? may we checkmate? may you checkmate? may they checkmate?	may I be checkmating? may you be checkmating? may he be checkmating? may we be checkmating? may you be checkmating? may they be checkmating?
Perfect	V-ing perfect
may I have checkmated? may you have checkmated? may he have checkmated? may we have checkmated? may you have checkmated? may they have checkmated?	may I have been checkmating? may you have been checkmating? may he have been checkmating? may we have been checkmating? may you have been checkmating? may they have been checkmating?

Interro-negative form

Simple form	V-ing form
mayn't I checkmate? mayn't you checkmate? mayn't he checkmate? mayn't we checkmate? mayn't you checkmate? mayn't they checkmate?	mayn't I be checkmating? mayn't you be checkmating? mayn't he be checkmating? mayn't we be checkmating? mayn't you be checkmating? mayn't they be checkmating?
Perfect	V-ing perfect
mayn't I have checkmated? mayn't you have checkmated? mayn't he have checkmated? mayn't we have checkmated? mayn't you have checkmated? mayn't they have checkmated?	mayn't I have been checkmating? mayn't you have been checkmating? mayn't he have been checkmating? mayn't we have been checkmating? mayn't you have been checkmating? mayn't they have been checkmating?