English verb conjugation
COULD IMPEARL

Regular verb: impearl - impearled - impearled

Affirmation

Simple form	V-ing form
I could impearl you could impearl he could impearl we could impearl you could impearl they could impearl	I could be impearling you could be impearling he could be impearling we could be impearling you could be impearling they could be impearling
Perfect	V-ing perfect
I could have impearled you could have impearled he could have impearled we could have impearled you could have impearled they could have impearled	I could have been impearling you could have been impearling he could have been impearling we could have been impearling you could have been impearling they could have been impearling

Negation

Simple form	V-ing form
I could not impearl you could not impearl he could not impearl we could not impearl you could not impearl they could not impearl	I could not be impearling you could not be impearling he could not be impearling we could not be impearling you could not be impearling they could not be impearling
Perfect	V-ing perfect
I could not have impearled you could not have impearled he could not have impearled we could not have impearled you could not have impearled they could not have impearled	I could not have been impearling you could not have been impearling he could not have been impearling we could not have been impearling you could not have been impearling they could not have been impearling

Interrogative form

Simple form	V-ing form
could I impearl? could you impearl? could he impearl? could we impearl? could you impearl? could they impearl?	could I be impearling? could you be impearling? could he be impearling? could we be impearling? could you be impearling? could they be impearling?
Perfect	V-ing perfect
could I have impearled? could you have impearled? could he have impearled? could we have impearled? could you have impearled? could they have impearled?	could I have been impearling? could you have been impearling? could he have been impearling? could we have been impearling? could you have been impearling? could they have been impearling?

Interro-negative form

Simple form	V-ing form
could I not impearl? could you not impearl? could he not impearl? could we not impearl? could you not impearl? could they not impearl?	could I not be impearling? could you not be impearling? could he not be impearling? could we not be impearling? could you not be impearling? could they not be impearling?
Perfect	V-ing perfect
could I not have impearled? could you not have impearled? could he not have impearled? could we not have impearled? could you not have impearled? could they not have impearled?	could I not have been impearling? could you not have been impearling? could he not have been impearling? could we not have been impearling? could you not have been impearling? could they not have been impearling?