English verb conjugation
MUST SPIN SPIN

Regular verb: spin spin - spin spined - spin spined

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form	V-ing form
I must spin spin you must spin spin she must spin spin we must spin spin you must spin spin they must spin spin	I must be spin spining you must be spin spining she must be spin spining we must be spin spining you must be spin spining they must be spin spining
Perfect	V-ing perfect
I must have spin spined you must have spin spined she must have spin spined we must have spin spined you must have spin spined they must have spin spined	I must have been spin spining you must have been spin spining she must have been spin spining we must have been spin spining you must have been spin spining they must have been spin spining

Negation

Simple form	V-ing form
I mustn't spin spin you mustn't spin spin she mustn't spin spin we mustn't spin spin you mustn't spin spin they mustn't spin spin	I mustn't be spin spining you mustn't be spin spining she mustn't be spin spining we mustn't be spin spining you mustn't be spin spining they mustn't be spin spining
Perfect	V-ing perfect
I mustn't have spin spined you mustn't have spin spined she mustn't have spin spined we mustn't have spin spined you mustn't have spin spined they mustn't have spin spined	I mustn't have been spin spining you mustn't have been spin spining she mustn't have been spin spining we mustn't have been spin spining you mustn't have been spin spining they mustn't have been spin spining

Interrogative form

Simple form	V-ing form
must I spin spin? must you spin spin? must she spin spin? must we spin spin? must you spin spin? must they spin spin?	must I be spin spining? must you be spin spining? must she be spin spining? must we be spin spining? must you be spin spining? must they be spin spining?
Perfect	V-ing perfect
must I have spin spined? must you have spin spined? must she have spin spined? must we have spin spined? must you have spin spined? must they have spin spined?	must I have been spin spining? must you have been spin spining? must she have been spin spining? must we have been spin spining? must you have been spin spining? must they have been spin spining?

Interro-negative form

Simple form	V-ing form
mustn't I spin spin? mustn't you spin spin? mustn't she spin spin? mustn't we spin spin? mustn't you spin spin? mustn't they spin spin?	mustn't I be spin spining? mustn't you be spin spining? mustn't she be spin spining? mustn't we be spin spining? mustn't you be spin spining? mustn't they be spin spining?
Perfect	V-ing perfect
mustn't I have spin spined? mustn't you have spin spined? mustn't she have spin spined? mustn't we have spin spined? mustn't you have spin spined? mustn't they have spin spined?	mustn't I have been spin spining? mustn't you have been spin spining? mustn't she have been spin spining? mustn't we have been spin spining? mustn't you have been spin spining? mustn't they have been spin spining?