English verb conjugation
MAY EXCAVATE

Regular verb: excavate - excavated - excavated

Affirmation

Simple form	V-ing form
I may excavate you may excavate he may excavate we may excavate you may excavate they may excavate	I may be excavating you may be excavating he may be excavating we may be excavating you may be excavating they may be excavating
Perfect	V-ing perfect
I may have excavated you may have excavated he may have excavated we may have excavated you may have excavated they may have excavated	I may have been excavating you may have been excavating he may have been excavating we may have been excavating you may have been excavating they may have been excavating

Negation

Simple form	V-ing form
I mayn't excavate you mayn't excavate he mayn't excavate we mayn't excavate you mayn't excavate they mayn't excavate	I mayn't be excavating you mayn't be excavating he mayn't be excavating we mayn't be excavating you mayn't be excavating they mayn't be excavating
Perfect	V-ing perfect
I mayn't have excavated you mayn't have excavated he mayn't have excavated we mayn't have excavated you mayn't have excavated they mayn't have excavated	I mayn't have been excavating you mayn't have been excavating he mayn't have been excavating we mayn't have been excavating you mayn't have been excavating they mayn't have been excavating

Interrogative form

Simple form	V-ing form
may I excavate? may you excavate? may he excavate? may we excavate? may you excavate? may they excavate?	may I be excavating? may you be excavating? may he be excavating? may we be excavating? may you be excavating? may they be excavating?
Perfect	V-ing perfect
may I have excavated? may you have excavated? may he have excavated? may we have excavated? may you have excavated? may they have excavated?	may I have been excavating? may you have been excavating? may he have been excavating? may we have been excavating? may you have been excavating? may they have been excavating?

Interro-negative form

Simple form	V-ing form
mayn't I excavate? mayn't you excavate? mayn't he excavate? mayn't we excavate? mayn't you excavate? mayn't they excavate?	mayn't I be excavating? mayn't you be excavating? mayn't he be excavating? mayn't we be excavating? mayn't you be excavating? mayn't they be excavating?
Perfect	V-ing perfect
mayn't I have excavated? mayn't you have excavated? mayn't he have excavated? mayn't we have excavated? mayn't you have excavated? mayn't they have excavated?	mayn't I have been excavating? mayn't you have been excavating? mayn't he have been excavating? mayn't we have been excavating? mayn't you have been excavating? mayn't they have been excavating?