English verb conjugation
COULD 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 could spin spin you could spin spin he could spin spin we could spin spin you could spin spin they could spin spin	I could be spin spining you could be spin spining he could be spin spining we could be spin spining you could be spin spining they could be spin spining
Perfect	V-ing perfect
I could have spin spined you could have spin spined he could have spin spined we could have spin spined you could have spin spined they could have spin spined	I could have been spin spining you could have been spin spining he could have been spin spining we could have been spin spining you could have been spin spining they could have been spin spining

Negation

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

Interrogative form

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

Interro-negative form

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