I can isle you can isle she can isle we can isle you can isle they can isle
V-ing form
I can be isling you can be isling she can be isling we can be isling you can be isling they can be isling
Perfect
I can have isled you can have isled she can have isled we can have isled you can have isled they can have isled
V-ing perfect
I can have been isling you can have been isling she can have been isling we can have been isling you can have been isling they can have been isling
Negation
Simple form
I cannot isle you cannot isle she cannot isle we cannot isle you cannot isle they cannot isle
V-ing form
I cannot be isling you cannot be isling she cannot be isling we cannot be isling you cannot be isling they cannot be isling
Perfect
I cannot have isled you cannot have isled she cannot have isled we cannot have isled you cannot have isled they cannot have isled
V-ing perfect
I cannot have been isling you cannot have been isling she cannot have been isling we cannot have been isling you cannot have been isling they cannot have been isling
Interrogative form
Simple form
can I isle? can you isle? can she isle? can we isle? can you isle? can they isle?
V-ing form
can I be isling? can you be isling? can she be isling? can we be isling? can you be isling? can they be isling?
Perfect
can I have isled? can you have isled? can she have isled? can we have isled? can you have isled? can they have isled?
V-ing perfect
can I have been isling? can you have been isling? can she have been isling? can we have been isling? can you have been isling? can they have been isling?
Interro-negative form
Simple form
can I not isle? can you not isle? can she not isle? can we not isle? can you not isle? can they not isle?
V-ing form
can I not be isling? can you not be isling? can she not be isling? can we not be isling? can you not be isling? can they not be isling?
Perfect
can I not have isled? can you not have isled? can she not have isled? can we not have isled? can you not have isled? can they not have isled?
V-ing perfect
can I not have been isling? can you not have been isling? can she not have been isling? can we not have been isling? can you not have been isling? can they not have been isling?