I could devil you could devil she could devil we could devil you could devil they could devil
V-ing form
I could be devilling you could be devilling she could be devilling we could be devilling you could be devilling they could be devilling
Perfect
I could have devilled you could have devilled she could have devilled we could have devilled you could have devilled they could have devilled
V-ing perfect
I could have been devilling you could have been devilling she could have been devilling we could have been devilling you could have been devilling they could have been devilling
Negation
Simple form
I could not devil you could not devil she could not devil we could not devil you could not devil they could not devil
V-ing form
I could not be devilling you could not be devilling she could not be devilling we could not be devilling you could not be devilling they could not be devilling
Perfect
I could not have devilled you could not have devilled she could not have devilled we could not have devilled you could not have devilled they could not have devilled
V-ing perfect
I could not have been devilling you could not have been devilling she could not have been devilling we could not have been devilling you could not have been devilling they could not have been devilling
Interrogative form
Simple form
could I devil? could you devil? could she devil? could we devil? could you devil? could they devil?
V-ing form
could I be devilling? could you be devilling? could she be devilling? could we be devilling? could you be devilling? could they be devilling?
Perfect
could I have devilled? could you have devilled? could she have devilled? could we have devilled? could you have devilled? could they have devilled?
V-ing perfect
could I have been devilling? could you have been devilling? could she have been devilling? could we have been devilling? could you have been devilling? could they have been devilling?
Interro-negative form
Simple form
could I not devil? could you not devil? could she not devil? could we not devil? could you not devil? could they not devil?
V-ing form
could I not be devilling? could you not be devilling? could she not be devilling? could we not be devilling? could you not be devilling? could they not be devilling?
Perfect
could I not have devilled? could you not have devilled? could she not have devilled? could we not have devilled? could you not have devilled? could they not have devilled?
V-ing perfect
could I not have been devilling? could you not have been devilling? could she not have been devilling? could we not have been devilling? could you not have been devilling? could they not have been devilling?