English verb conjugation
MUST BACKCOMB

Regular verb: backcomb - backcombed - backcombed

Affirmation

Simple form	V-ing form
I must backcomb you must backcomb he must backcomb we must backcomb you must backcomb they must backcomb	I must be backcombing you must be backcombing he must be backcombing we must be backcombing you must be backcombing they must be backcombing
Perfect	V-ing perfect
I must have backcombed you must have backcombed he must have backcombed we must have backcombed you must have backcombed they must have backcombed	I must have been backcombing you must have been backcombing he must have been backcombing we must have been backcombing you must have been backcombing they must have been backcombing

Negation

Simple form	V-ing form
I must not backcomb you must not backcomb he must not backcomb we must not backcomb you must not backcomb they must not backcomb	I must not be backcombing you must not be backcombing he must not be backcombing we must not be backcombing you must not be backcombing they must not be backcombing
Perfect	V-ing perfect
I must not have backcombed you must not have backcombed he must not have backcombed we must not have backcombed you must not have backcombed they must not have backcombed	I must not have been backcombing you must not have been backcombing he must not have been backcombing we must not have been backcombing you must not have been backcombing they must not have been backcombing

Interrogative form

Simple form	V-ing form
must I backcomb? must you backcomb? must he backcomb? must we backcomb? must you backcomb? must they backcomb?	must I be backcombing? must you be backcombing? must he be backcombing? must we be backcombing? must you be backcombing? must they be backcombing?
Perfect	V-ing perfect
must I have backcombed? must you have backcombed? must he have backcombed? must we have backcombed? must you have backcombed? must they have backcombed?	must I have been backcombing? must you have been backcombing? must he have been backcombing? must we have been backcombing? must you have been backcombing? must they have been backcombing?

Interro-negative form

Simple form	V-ing form
must I not backcomb? must you not backcomb? must he not backcomb? must we not backcomb? must you not backcomb? must they not backcomb?	must I not be backcombing? must you not be backcombing? must he not be backcombing? must we not be backcombing? must you not be backcombing? must they not be backcombing?
Perfect	V-ing perfect
must I not have backcombed? must you not have backcombed? must he not have backcombed? must we not have backcombed? must you not have backcombed? must they not have backcombed?	must I not have been backcombing? must you not have been backcombing? must he not have been backcombing? must we not have been backcombing? must you not have been backcombing? must they not have been backcombing?