English verb conjugation
MAY SWEETEN

Regular verb: sweeten - sweetened - sweetened

Affirmation

Simple form	V-ing form
I may sweeten you may sweeten he may sweeten we may sweeten you may sweeten they may sweeten	I may be sweetening you may be sweetening he may be sweetening we may be sweetening you may be sweetening they may be sweetening
Perfect	V-ing perfect
I may have sweetened you may have sweetened he may have sweetened we may have sweetened you may have sweetened they may have sweetened	I may have been sweetening you may have been sweetening he may have been sweetening we may have been sweetening you may have been sweetening they may have been sweetening

Negation

Simple form	V-ing form
I mayn't sweeten you mayn't sweeten he mayn't sweeten we mayn't sweeten you mayn't sweeten they mayn't sweeten	I mayn't be sweetening you mayn't be sweetening he mayn't be sweetening we mayn't be sweetening you mayn't be sweetening they mayn't be sweetening
Perfect	V-ing perfect
I mayn't have sweetened you mayn't have sweetened he mayn't have sweetened we mayn't have sweetened you mayn't have sweetened they mayn't have sweetened	I mayn't have been sweetening you mayn't have been sweetening he mayn't have been sweetening we mayn't have been sweetening you mayn't have been sweetening they mayn't have been sweetening

Interrogative form

Simple form	V-ing form
may I sweeten? may you sweeten? may he sweeten? may we sweeten? may you sweeten? may they sweeten?	may I be sweetening? may you be sweetening? may he be sweetening? may we be sweetening? may you be sweetening? may they be sweetening?
Perfect	V-ing perfect
may I have sweetened? may you have sweetened? may he have sweetened? may we have sweetened? may you have sweetened? may they have sweetened?	may I have been sweetening? may you have been sweetening? may he have been sweetening? may we have been sweetening? may you have been sweetening? may they have been sweetening?

Interro-negative form

Simple form	V-ing form
mayn't I sweeten? mayn't you sweeten? mayn't he sweeten? mayn't we sweeten? mayn't you sweeten? mayn't they sweeten?	mayn't I be sweetening? mayn't you be sweetening? mayn't he be sweetening? mayn't we be sweetening? mayn't you be sweetening? mayn't they be sweetening?
Perfect	V-ing perfect
mayn't I have sweetened? mayn't you have sweetened? mayn't he have sweetened? mayn't we have sweetened? mayn't you have sweetened? mayn't they have sweetened?	mayn't I have been sweetening? mayn't you have been sweetening? mayn't he have been sweetening? mayn't we have been sweetening? mayn't you have been sweetening? mayn't they have been sweetening?