English verb conjugation
MAY OVERESTIMATE

Regular verb: overestimate - overestimated - overestimated

Affirmation

Simple form	V-ing form
I may overestimate you may overestimate he may overestimate we may overestimate you may overestimate they may overestimate	I may be overestimating you may be overestimating he may be overestimating we may be overestimating you may be overestimating they may be overestimating
Perfect	V-ing perfect
I may have overestimated you may have overestimated he may have overestimated we may have overestimated you may have overestimated they may have overestimated	I may have been overestimating you may have been overestimating he may have been overestimating we may have been overestimating you may have been overestimating they may have been overestimating

Negation

Simple form	V-ing form
I mayn't overestimate you mayn't overestimate he mayn't overestimate we mayn't overestimate you mayn't overestimate they mayn't overestimate	I mayn't be overestimating you mayn't be overestimating he mayn't be overestimating we mayn't be overestimating you mayn't be overestimating they mayn't be overestimating
Perfect	V-ing perfect
I mayn't have overestimated you mayn't have overestimated he mayn't have overestimated we mayn't have overestimated you mayn't have overestimated they mayn't have overestimated	I mayn't have been overestimating you mayn't have been overestimating he mayn't have been overestimating we mayn't have been overestimating you mayn't have been overestimating they mayn't have been overestimating

Interrogative form

Simple form	V-ing form
may I overestimate? may you overestimate? may he overestimate? may we overestimate? may you overestimate? may they overestimate?	may I be overestimating? may you be overestimating? may he be overestimating? may we be overestimating? may you be overestimating? may they be overestimating?
Perfect	V-ing perfect
may I have overestimated? may you have overestimated? may he have overestimated? may we have overestimated? may you have overestimated? may they have overestimated?	may I have been overestimating? may you have been overestimating? may he have been overestimating? may we have been overestimating? may you have been overestimating? may they have been overestimating?

Interro-negative form

Simple form	V-ing form
mayn't I overestimate? mayn't you overestimate? mayn't he overestimate? mayn't we overestimate? mayn't you overestimate? mayn't they overestimate?	mayn't I be overestimating? mayn't you be overestimating? mayn't he be overestimating? mayn't we be overestimating? mayn't you be overestimating? mayn't they be overestimating?
Perfect	V-ing perfect
mayn't I have overestimated? mayn't you have overestimated? mayn't he have overestimated? mayn't we have overestimated? mayn't you have overestimated? mayn't they have overestimated?	mayn't I have been overestimating? mayn't you have been overestimating? mayn't he have been overestimating? mayn't we have been overestimating? mayn't you have been overestimating? mayn't they have been overestimating?