English verb conjugation
COULD UNTWIST

Regular verb: untwist - untwisted - untwisted

Affirmation

Simple form	V-ing form
I could untwist you could untwist he could untwist we could untwist you could untwist they could untwist	I could be untwisting you could be untwisting he could be untwisting we could be untwisting you could be untwisting they could be untwisting
Perfect	V-ing perfect
I could have untwisted you could have untwisted he could have untwisted we could have untwisted you could have untwisted they could have untwisted	I could have been untwisting you could have been untwisting he could have been untwisting we could have been untwisting you could have been untwisting they could have been untwisting

Negation

Simple form	V-ing form
I could not untwist you could not untwist he could not untwist we could not untwist you could not untwist they could not untwist	I could not be untwisting you could not be untwisting he could not be untwisting we could not be untwisting you could not be untwisting they could not be untwisting
Perfect	V-ing perfect
I could not have untwisted you could not have untwisted he could not have untwisted we could not have untwisted you could not have untwisted they could not have untwisted	I could not have been untwisting you could not have been untwisting he could not have been untwisting we could not have been untwisting you could not have been untwisting they could not have been untwisting

Interrogative form

Simple form	V-ing form
could I untwist? could you untwist? could he untwist? could we untwist? could you untwist? could they untwist?	could I be untwisting? could you be untwisting? could he be untwisting? could we be untwisting? could you be untwisting? could they be untwisting?
Perfect	V-ing perfect
could I have untwisted? could you have untwisted? could he have untwisted? could we have untwisted? could you have untwisted? could they have untwisted?	could I have been untwisting? could you have been untwisting? could he have been untwisting? could we have been untwisting? could you have been untwisting? could they have been untwisting?

Interro-negative form

Simple form	V-ing form
could I not untwist? could you not untwist? could he not untwist? could we not untwist? could you not untwist? could they not untwist?	could I not be untwisting? could you not be untwisting? could he not be untwisting? could we not be untwisting? could you not be untwisting? could they not be untwisting?
Perfect	V-ing perfect
could I not have untwisted? could you not have untwisted? could he not have untwisted? could we not have untwisted? could you not have untwisted? could they not have untwisted?	could I not have been untwisting? could you not have been untwisting? could he not have been untwisting? could we not have been untwisting? could you not have been untwisting? could they not have been untwisting?