English verb conjugation
COULD ISLE

Regular verb: isle - isled - isled

Affirmation

Simple form	V-ing form
I could isle you could isle he could isle we could isle you could isle they could isle	I could be isling you could be isling he could be isling we could be isling you could be isling they could be isling
Perfect	V-ing perfect
I could have isled you could have isled he could have isled we could have isled you could have isled they could have isled	I could have been isling you could have been isling he could have been isling we could have been isling you could have been isling they could have been isling

Negation

Simple form	V-ing form
I could not isle you could not isle he could not isle we could not isle you could not isle they could not isle	I could not be isling you could not be isling he could not be isling we could not be isling you could not be isling they could not be isling
Perfect	V-ing perfect
I could not have isled you could not have isled he could not have isled we could not have isled you could not have isled they could not have isled	I could not have been isling you could not have been isling he could not have been isling we could not have been isling you could not have been isling they could not have been isling

Interrogative form

Simple form	V-ing form
could I isle? could you isle? could he isle? could we isle? could you isle? could they isle?	could I be isling? could you be isling? could he be isling? could we be isling? could you be isling? could they be isling?
Perfect	V-ing perfect
could I have isled? could you have isled? could he have isled? could we have isled? could you have isled? could they have isled?	could I have been isling? could you have been isling? could he have been isling? could we have been isling? could you have been isling? could they have been isling?

Interro-negative form

Simple form	V-ing form
could I not isle? could you not isle? could he not isle? could we not isle? could you not isle? could they not isle?	could I not be isling? could you not be isling? could he not be isling? could we not be isling? could you not be isling? could they not be isling?
Perfect	V-ing perfect
could I not have isled? could you not have isled? could he not have isled? could we not have isled? could you not have isled? could they not have isled?	could I not have been isling? could you not have been isling? could he not have been isling? could we not have been isling? could you not have been isling? could they not have been isling?