English verb conjugation
MUST TOMB

Regular verb: tomb - tombed - tombed

Affirmation

Simple form	V-ing form
I must tomb you must tomb he must tomb we must tomb you must tomb they must tomb	I must be tombing you must be tombing he must be tombing we must be tombing you must be tombing they must be tombing
Perfect	V-ing perfect
I must have tombed you must have tombed he must have tombed we must have tombed you must have tombed they must have tombed	I must have been tombing you must have been tombing he must have been tombing we must have been tombing you must have been tombing they must have been tombing

Negation

Simple form	V-ing form
I must not tomb you must not tomb he must not tomb we must not tomb you must not tomb they must not tomb	I must not be tombing you must not be tombing he must not be tombing we must not be tombing you must not be tombing they must not be tombing
Perfect	V-ing perfect
I must not have tombed you must not have tombed he must not have tombed we must not have tombed you must not have tombed they must not have tombed	I must not have been tombing you must not have been tombing he must not have been tombing we must not have been tombing you must not have been tombing they must not have been tombing

Interrogative form

Simple form	V-ing form
must I tomb? must you tomb? must he tomb? must we tomb? must you tomb? must they tomb?	must I be tombing? must you be tombing? must he be tombing? must we be tombing? must you be tombing? must they be tombing?
Perfect	V-ing perfect
must I have tombed? must you have tombed? must he have tombed? must we have tombed? must you have tombed? must they have tombed?	must I have been tombing? must you have been tombing? must he have been tombing? must we have been tombing? must you have been tombing? must they have been tombing?

Interro-negative form

Simple form	V-ing form
must I not tomb? must you not tomb? must he not tomb? must we not tomb? must you not tomb? must they not tomb?	must I not be tombing? must you not be tombing? must he not be tombing? must we not be tombing? must you not be tombing? must they not be tombing?
Perfect	V-ing perfect
must I not have tombed? must you not have tombed? must he not have tombed? must we not have tombed? must you not have tombed? must they not have tombed?	must I not have been tombing? must you not have been tombing? must he not have been tombing? must we not have been tombing? must you not have been tombing? must they not have been tombing?