Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I must spin spin you must spin spin he must spin spin we must spin spin you must spin spin they must spin spin
V-ing form
I must be spin spining you must be spin spining he must be spin spining we must be spin spining you must be spin spining they must be spin spining
Perfect
I must have spin spined you must have spin spined he must have spin spined we must have spin spined you must have spin spined they must have spin spined
V-ing perfect
I must have been spin spining you must have been spin spining he 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
I mustn't spin spin you mustn't spin spin he mustn't spin spin we mustn't spin spin you mustn't spin spin they mustn't spin spin
V-ing form
I mustn't be spin spining you mustn't be spin spining he mustn't be spin spining we mustn't be spin spining you mustn't be spin spining they mustn't be spin spining
Perfect
I mustn't have spin spined you mustn't have spin spined he mustn't have spin spined we mustn't have spin spined you mustn't have spin spined they mustn't have spin spined
V-ing perfect
I mustn't have been spin spining you mustn't have been spin spining he 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
must I spin spin? must you spin spin? must he spin spin? must we spin spin? must you spin spin? must they spin spin?
V-ing form
must I be spin spining? must you be spin spining? must he be spin spining? must we be spin spining? must you be spin spining? must they be spin spining?
Perfect
must I have spin spined? must you have spin spined? must he have spin spined? must we have spin spined? must you have spin spined? must they have spin spined?
V-ing perfect
must I have been spin spining? must you have been spin spining? must he 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
mustn't I spin spin? mustn't you spin spin? mustn't he spin spin? mustn't we spin spin? mustn't you spin spin? mustn't they spin spin?
V-ing form
mustn't I be spin spining? mustn't you be spin spining? mustn't he be spin spining? mustn't we be spin spining? mustn't you be spin spining? mustn't they be spin spining?
Perfect
mustn't I have spin spined? mustn't you have spin spined? mustn't he have spin spined? mustn't we have spin spined? mustn't you have spin spined? mustn't they have spin spined?
V-ing perfect
mustn't I have been spin spining? mustn't you have been spin spining? mustn't he 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?