English verb conjugation
COULD LIP

Regular verb: lip - liped - liped

Affirmation

Simple form	V-ing form
I could lip you could lip he could lip we could lip you could lip they could lip	I could be liping you could be liping he could be liping we could be liping you could be liping they could be liping
Perfect	V-ing perfect
I could have liped you could have liped he could have liped we could have liped you could have liped they could have liped	I could have been liping you could have been liping he could have been liping we could have been liping you could have been liping they could have been liping

Negation

Simple form	V-ing form
I could not lip you could not lip he could not lip we could not lip you could not lip they could not lip	I could not be liping you could not be liping he could not be liping we could not be liping you could not be liping they could not be liping
Perfect	V-ing perfect
I could not have liped you could not have liped he could not have liped we could not have liped you could not have liped they could not have liped	I could not have been liping you could not have been liping he could not have been liping we could not have been liping you could not have been liping they could not have been liping

Interrogative form

Simple form	V-ing form
could I lip? could you lip? could he lip? could we lip? could you lip? could they lip?	could I be liping? could you be liping? could he be liping? could we be liping? could you be liping? could they be liping?
Perfect	V-ing perfect
could I have liped? could you have liped? could he have liped? could we have liped? could you have liped? could they have liped?	could I have been liping? could you have been liping? could he have been liping? could we have been liping? could you have been liping? could they have been liping?

Interro-negative form

Simple form	V-ing form
could I not lip? could you not lip? could he not lip? could we not lip? could you not lip? could they not lip?	could I not be liping? could you not be liping? could he not be liping? could we not be liping? could you not be liping? could they not be liping?
Perfect	V-ing perfect
could I not have liped? could you not have liped? could he not have liped? could we not have liped? could you not have liped? could they not have liped?	could I not have been liping? could you not have been liping? could he not have been liping? could we not have been liping? could you not have been liping? could they not have been liping?