I may snowball you may snowball she may snowball we may snowball you may snowball they may snowball
V-ing form
I may be snowballing you may be snowballing she may be snowballing we may be snowballing you may be snowballing they may be snowballing
Perfect
I may have snowballed you may have snowballed she may have snowballed we may have snowballed you may have snowballed they may have snowballed
V-ing perfect
I may have been snowballing you may have been snowballing she may have been snowballing we may have been snowballing you may have been snowballing they may have been snowballing
Negation
Simple form
I may not snowball you may not snowball she may not snowball we may not snowball you may not snowball they may not snowball
V-ing form
I may not be snowballing you may not be snowballing she may not be snowballing we may not be snowballing you may not be snowballing they may not be snowballing
Perfect
I may not have snowballed you may not have snowballed she may not have snowballed we may not have snowballed you may not have snowballed they may not have snowballed
V-ing perfect
I may not have been snowballing you may not have been snowballing she may not have been snowballing we may not have been snowballing you may not have been snowballing they may not have been snowballing
Interrogative form
Simple form
may I snowball? may you snowball? may she snowball? may we snowball? may you snowball? may they snowball?
V-ing form
may I be snowballing? may you be snowballing? may she be snowballing? may we be snowballing? may you be snowballing? may they be snowballing?
Perfect
may I have snowballed? may you have snowballed? may she have snowballed? may we have snowballed? may you have snowballed? may they have snowballed?
V-ing perfect
may I have been snowballing? may you have been snowballing? may she have been snowballing? may we have been snowballing? may you have been snowballing? may they have been snowballing?
Interro-negative form
Simple form
may I not snowball? may you not snowball? may she not snowball? may we not snowball? may you not snowball? may they not snowball?
V-ing form
may I not be snowballing? may you not be snowballing? may she not be snowballing? may we not be snowballing? may you not be snowballing? may they not be snowballing?
Perfect
may I not have snowballed? may you not have snowballed? may she not have snowballed? may we not have snowballed? may you not have snowballed? may they not have snowballed?
V-ing perfect
may I not have been snowballing? may you not have been snowballing? may she not have been snowballing? may we not have been snowballing? may you not have been snowballing? may they not have been snowballing?