English verb conjugation
MUST COUNTERMINE

Regular verb: countermine - countermined - countermined

Affirmation

Simple form	V-ing form
I must countermine you must countermine she must countermine we must countermine you must countermine they must countermine	I must be countermining you must be countermining she 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 she 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 she 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 mustn't countermine you mustn't countermine she mustn't countermine we mustn't countermine you mustn't countermine they mustn't countermine	I mustn't be countermining you mustn't be countermining she mustn't be countermining we mustn't be countermining you mustn't be countermining they mustn't be countermining
Perfect	V-ing perfect
I mustn't have countermined you mustn't have countermined she mustn't have countermined we mustn't have countermined you mustn't have countermined they mustn't have countermined	I mustn't have been countermining you mustn't have been countermining she mustn't have been countermining we mustn't have been countermining you mustn't have been countermining they mustn't have been countermining

Interrogative form

Simple form	V-ing form
must I countermine? must you countermine? must she countermine? must we countermine? must you countermine? must they countermine?	must I be countermining? must you be countermining? must she 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 she 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 she 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
mustn't I countermine? mustn't you countermine? mustn't she countermine? mustn't we countermine? mustn't you countermine? mustn't they countermine?	mustn't I be countermining? mustn't you be countermining? mustn't she be countermining? mustn't we be countermining? mustn't you be countermining? mustn't they be countermining?
Perfect	V-ing perfect
mustn't I have countermined? mustn't you have countermined? mustn't she have countermined? mustn't we have countermined? mustn't you have countermined? mustn't they have countermined?	mustn't I have been countermining? mustn't you have been countermining? mustn't she have been countermining? mustn't we have been countermining? mustn't you have been countermining? mustn't they have been countermining?