English verb conjugation
MUST SPALL

Regular verb: spall - spalled - spalled

Affirmation

Simple form	V-ing form
I must spall you must spall she must spall we must spall you must spall they must spall	I must be spalling you must be spalling she must be spalling we must be spalling you must be spalling they must be spalling
Perfect	V-ing perfect
I must have spalled you must have spalled she must have spalled we must have spalled you must have spalled they must have spalled	I must have been spalling you must have been spalling she must have been spalling we must have been spalling you must have been spalling they must have been spalling

Negation

Simple form	V-ing form
I mustn't spall you mustn't spall she mustn't spall we mustn't spall you mustn't spall they mustn't spall	I mustn't be spalling you mustn't be spalling she mustn't be spalling we mustn't be spalling you mustn't be spalling they mustn't be spalling
Perfect	V-ing perfect
I mustn't have spalled you mustn't have spalled she mustn't have spalled we mustn't have spalled you mustn't have spalled they mustn't have spalled	I mustn't have been spalling you mustn't have been spalling she mustn't have been spalling we mustn't have been spalling you mustn't have been spalling they mustn't have been spalling

Interrogative form

Simple form	V-ing form
must I spall? must you spall? must she spall? must we spall? must you spall? must they spall?	must I be spalling? must you be spalling? must she be spalling? must we be spalling? must you be spalling? must they be spalling?
Perfect	V-ing perfect
must I have spalled? must you have spalled? must she have spalled? must we have spalled? must you have spalled? must they have spalled?	must I have been spalling? must you have been spalling? must she have been spalling? must we have been spalling? must you have been spalling? must they have been spalling?

Interro-negative form

Simple form	V-ing form
mustn't I spall? mustn't you spall? mustn't she spall? mustn't we spall? mustn't you spall? mustn't they spall?	mustn't I be spalling? mustn't you be spalling? mustn't she be spalling? mustn't we be spalling? mustn't you be spalling? mustn't they be spalling?
Perfect	V-ing perfect
mustn't I have spalled? mustn't you have spalled? mustn't she have spalled? mustn't we have spalled? mustn't you have spalled? mustn't they have spalled?	mustn't I have been spalling? mustn't you have been spalling? mustn't she have been spalling? mustn't we have been spalling? mustn't you have been spalling? mustn't they have been spalling?