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 couldn't spiral you couldn't spiral he couldn't spiral we couldn't spiral you couldn't spiral they couldn't spiral	I couldn't be spiralling you couldn't be spiralling he couldn't be spiralling we couldn't be spiralling you couldn't be spiralling they couldn't be spiralling
Perfect	V-ing perfect
I couldn't have spiralled you couldn't have spiralled he couldn't have spiralled we couldn't have spiralled you couldn't have spiralled they couldn't have spiralled	I couldn't have been spiralling you couldn't have been spiralling he couldn't have been spiralling we couldn't have been spiralling you couldn't have been spiralling they couldn't 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
couldn't I spiral? couldn't you spiral? couldn't he spiral? couldn't we spiral? couldn't you spiral? couldn't they spiral?	couldn't I be spiralling? couldn't you be spiralling? couldn't he be spiralling? couldn't we be spiralling? couldn't you be spiralling? couldn't they be spiralling?
Perfect	V-ing perfect
couldn't I have spiralled? couldn't you have spiralled? couldn't he have spiralled? couldn't we have spiralled? couldn't you have spiralled? couldn't they have spiralled?	couldn't I have been spiralling? couldn't you have been spiralling? couldn't he have been spiralling? couldn't we have been spiralling? couldn't you have been spiralling? couldn't they have been spiralling?