English verb conjugation
COULD SPIRAL

Regular verb: spiral - spiralled - spiralled

Affirmation

Simple form	V-ing form
I could spiral you could spiral he could spiral we could spiral you could spiral they could spiral	I could be spiralling you could be spiralling he could be spiralling we could be spiralling you could be spiralling they could be spiralling
Perfect	V-ing perfect
I could have spiralled you could have spiralled he could have spiralled we could have spiralled you could have spiralled they could have spiralled	I could have been spiralling you could have been spiralling he could have been spiralling we could have been spiralling you could have been spiralling they could have been spiralling

Negation

Simple form	V-ing form
I could not spiral you could not spiral he could not spiral we could not spiral you could not spiral they could not spiral	I could not be spiralling you could not be spiralling he could not be spiralling we could not be spiralling you could not be spiralling they could not be spiralling
Perfect	V-ing perfect
I could not have spiralled you could not have spiralled he could not have spiralled we could not have spiralled you could not have spiralled they could not have spiralled	I could not have been spiralling you could not have been spiralling he could not have been spiralling we could not have been spiralling you could not have been spiralling they could not have been spiralling

Interrogative form

Simple form	V-ing form
could I spiral? could you spiral? could he spiral? could we spiral? could you spiral? could they spiral?	could I be spiralling? could you be spiralling? could he be spiralling? could we be spiralling? could you be spiralling? could they be spiralling?
Perfect	V-ing perfect
could I have spiralled? could you have spiralled? could he have spiralled? could we have spiralled? could you have spiralled? could they have spiralled?	could I have been spiralling? could you have been spiralling? could he have been spiralling? could we have been spiralling? could you have been spiralling? could they have been spiralling?

Interro-negative form

Simple form	V-ing form
could I not spiral? could you not spiral? could he not spiral? could we not spiral? could you not spiral? could they not spiral?	could I not be spiralling? could you not be spiralling? could he not be spiralling? could we not be spiralling? could you not be spiralling? could they not be spiralling?
Perfect	V-ing perfect
could I not have spiralled? could you not have spiralled? could he not have spiralled? could we not have spiralled? could you not have spiralled? could they not have spiralled?	could I not have been spiralling? could you not have been spiralling? could he not have been spiralling? could we not have been spiralling? could you not have been spiralling? could they not have been spiralling?