English verb conjugation
COULD ICE

Regular verb: ice - iced - iced

Affirmation

Simple form	V-ing form
I could ice you could ice he could ice we could ice you could ice they could ice	I could be icing you could be icing he could be icing we could be icing you could be icing they could be icing
Perfect	V-ing perfect
I could have iced you could have iced he could have iced we could have iced you could have iced they could have iced	I could have been icing you could have been icing he could have been icing we could have been icing you could have been icing they could have been icing

Negation

Simple form	V-ing form
I could not ice you could not ice he could not ice we could not ice you could not ice they could not ice	I could not be icing you could not be icing he could not be icing we could not be icing you could not be icing they could not be icing
Perfect	V-ing perfect
I could not have iced you could not have iced he could not have iced we could not have iced you could not have iced they could not have iced	I could not have been icing you could not have been icing he could not have been icing we could not have been icing you could not have been icing they could not have been icing

Interrogative form

Simple form	V-ing form
could I ice? could you ice? could he ice? could we ice? could you ice? could they ice?	could I be icing? could you be icing? could he be icing? could we be icing? could you be icing? could they be icing?
Perfect	V-ing perfect
could I have iced? could you have iced? could he have iced? could we have iced? could you have iced? could they have iced?	could I have been icing? could you have been icing? could he have been icing? could we have been icing? could you have been icing? could they have been icing?

Interro-negative form

Simple form	V-ing form
could I not ice? could you not ice? could he not ice? could we not ice? could you not ice? could they not ice?	could I not be icing? could you not be icing? could he not be icing? could we not be icing? could you not be icing? could they not be icing?
Perfect	V-ing perfect
could I not have iced? could you not have iced? could he not have iced? could we not have iced? could you not have iced? could they not have iced?	could I not have been icing? could you not have been icing? could he not have been icing? could we not have been icing? could you not have been icing? could they not have been icing?