English verb conjugation
COULD SPALL

Regular verb: spall - spalled - spalled

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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