English verb conjugation
MAY SICKEN

Regular verb: sicken - sickened - sickened

Affirmation

Simple form	V-ing form
I may sicken you may sicken he may sicken we may sicken you may sicken they may sicken	I may be sickening you may be sickening he may be sickening we may be sickening you may be sickening they may be sickening
Perfect	V-ing perfect
I may have sickened you may have sickened he may have sickened we may have sickened you may have sickened they may have sickened	I may have been sickening you may have been sickening he may have been sickening we may have been sickening you may have been sickening they may have been sickening

Negation

Simple form	V-ing form
I may not sicken you may not sicken he may not sicken we may not sicken you may not sicken they may not sicken	I may not be sickening you may not be sickening he may not be sickening we may not be sickening you may not be sickening they may not be sickening
Perfect	V-ing perfect
I may not have sickened you may not have sickened he may not have sickened we may not have sickened you may not have sickened they may not have sickened	I may not have been sickening you may not have been sickening he may not have been sickening we may not have been sickening you may not have been sickening they may not have been sickening

Interrogative form

Simple form	V-ing form
may I sicken? may you sicken? may he sicken? may we sicken? may you sicken? may they sicken?	may I be sickening? may you be sickening? may he be sickening? may we be sickening? may you be sickening? may they be sickening?
Perfect	V-ing perfect
may I have sickened? may you have sickened? may he have sickened? may we have sickened? may you have sickened? may they have sickened?	may I have been sickening? may you have been sickening? may he have been sickening? may we have been sickening? may you have been sickening? may they have been sickening?

Interro-negative form

Simple form	V-ing form
may I not sicken? may you not sicken? may he not sicken? may we not sicken? may you not sicken? may they not sicken?	may I not be sickening? may you not be sickening? may he not be sickening? may we not be sickening? may you not be sickening? may they not be sickening?
Perfect	V-ing perfect
may I not have sickened? may you not have sickened? may he not have sickened? may we not have sickened? may you not have sickened? may they not have sickened?	may I not have been sickening? may you not have been sickening? may he not have been sickening? may we not have been sickening? may you not have been sickening? may they not have been sickening?