I may spall you may spall he may spall we may spall you may spall they may spall
V-ing form
I may be spalling you may be spalling he may be spalling we may be spalling you may be spalling they may be spalling
Perfect
I may have spalled you may have spalled he may have spalled we may have spalled you may have spalled they may have spalled
V-ing perfect
I may have been spalling you may have been spalling he may have been spalling we may have been spalling you may have been spalling they may have been spalling
Negation
Simple form
I may not spall you may not spall he may not spall we may not spall you may not spall they may not spall
V-ing form
I may not be spalling you may not be spalling he may not be spalling we may not be spalling you may not be spalling they may not be spalling
Perfect
I may not have spalled you may not have spalled he may not have spalled we may not have spalled you may not have spalled they may not have spalled
V-ing perfect
I may not have been spalling you may not have been spalling he may not have been spalling we may not have been spalling you may not have been spalling they may not have been spalling
Interrogative form
Simple form
may I spall? may you spall? may he spall? may we spall? may you spall? may they spall?
V-ing form
may I be spalling? may you be spalling? may he be spalling? may we be spalling? may you be spalling? may they be spalling?
Perfect
may I have spalled? may you have spalled? may he have spalled? may we have spalled? may you have spalled? may they have spalled?
V-ing perfect
may I have been spalling? may you have been spalling? may he have been spalling? may we have been spalling? may you have been spalling? may they have been spalling?
Interro-negative form
Simple form
may I not spall? may you not spall? may he not spall? may we not spall? may you not spall? may they not spall?
V-ing form
may I not be spalling? may you not be spalling? may he not be spalling? may we not be spalling? may you not be spalling? may they not be spalling?
Perfect
may I not have spalled? may you not have spalled? may he not have spalled? may we not have spalled? may you not have spalled? may they not have spalled?
V-ing perfect
may I not have been spalling? may you not have been spalling? may he not have been spalling? may we not have been spalling? may you not have been spalling? may they not have been spalling?