English verb conjugation
MUST COUNTERMINE

Regular verb: countermine - countermined - countermined

Affirmation

Simple form	V-ing form
I must countermine you must countermine he must countermine we must countermine you must countermine they must countermine	I must be countermining you must be countermining he must be countermining we must be countermining you must be countermining they must be countermining
Perfect	V-ing perfect
I must have countermined you must have countermined he must have countermined we must have countermined you must have countermined they must have countermined	I must have been countermining you must have been countermining he must have been countermining we must have been countermining you must have been countermining they must have been countermining

Negation

Simple form	V-ing form
I must not countermine you must not countermine he must not countermine we must not countermine you must not countermine they must not countermine	I must not be countermining you must not be countermining he must not be countermining we must not be countermining you must not be countermining they must not be countermining
Perfect	V-ing perfect
I must not have countermined you must not have countermined he must not have countermined we must not have countermined you must not have countermined they must not have countermined	I must not have been countermining you must not have been countermining he must not have been countermining we must not have been countermining you must not have been countermining they must not have been countermining

Interrogative form

Simple form	V-ing form
must I countermine? must you countermine? must he countermine? must we countermine? must you countermine? must they countermine?	must I be countermining? must you be countermining? must he be countermining? must we be countermining? must you be countermining? must they be countermining?
Perfect	V-ing perfect
must I have countermined? must you have countermined? must he have countermined? must we have countermined? must you have countermined? must they have countermined?	must I have been countermining? must you have been countermining? must he have been countermining? must we have been countermining? must you have been countermining? must they have been countermining?

Interro-negative form

Simple form	V-ing form
must I not countermine? must you not countermine? must he not countermine? must we not countermine? must you not countermine? must they not countermine?	must I not be countermining? must you not be countermining? must he not be countermining? must we not be countermining? must you not be countermining? must they not be countermining?
Perfect	V-ing perfect
must I not have countermined? must you not have countermined? must he not have countermined? must we not have countermined? must you not have countermined? must they not have countermined?	must I not have been countermining? must you not have been countermining? must he not have been countermining? must we not have been countermining? must you not have been countermining? must they not have been countermining?