English verb conjugation
MUST SLIP

Regular verb: slip - slipped - slipped

Affirmation

Simple form	V-ing form
I must slip you must slip he must slip we must slip you must slip they must slip	I must be slipping you must be slipping he must be slipping we must be slipping you must be slipping they must be slipping
Perfect	V-ing perfect
I must have slipped you must have slipped he must have slipped we must have slipped you must have slipped they must have slipped	I must have been slipping you must have been slipping he must have been slipping we must have been slipping you must have been slipping they must have been slipping

Negation

Simple form	V-ing form
I must not slip you must not slip he must not slip we must not slip you must not slip they must not slip	I must not be slipping you must not be slipping he must not be slipping we must not be slipping you must not be slipping they must not be slipping
Perfect	V-ing perfect
I must not have slipped you must not have slipped he must not have slipped we must not have slipped you must not have slipped they must not have slipped	I must not have been slipping you must not have been slipping he must not have been slipping we must not have been slipping you must not have been slipping they must not have been slipping

Interrogative form

Simple form	V-ing form
must I slip? must you slip? must he slip? must we slip? must you slip? must they slip?	must I be slipping? must you be slipping? must he be slipping? must we be slipping? must you be slipping? must they be slipping?
Perfect	V-ing perfect
must I have slipped? must you have slipped? must he have slipped? must we have slipped? must you have slipped? must they have slipped?	must I have been slipping? must you have been slipping? must he have been slipping? must we have been slipping? must you have been slipping? must they have been slipping?

Interro-negative form

Simple form	V-ing form
must I not slip? must you not slip? must he not slip? must we not slip? must you not slip? must they not slip?	must I not be slipping? must you not be slipping? must he not be slipping? must we not be slipping? must you not be slipping? must they not be slipping?
Perfect	V-ing perfect
must I not have slipped? must you not have slipped? must he not have slipped? must we not have slipped? must you not have slipped? must they not have slipped?	must I not have been slipping? must you not have been slipping? must he not have been slipping? must we not have been slipping? must you not have been slipping? must they not have been slipping?