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 mustn't countermine you mustn't countermine he 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 he 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 he 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 he 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 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
mustn't I countermine? mustn't you countermine? mustn't he 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 he 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 he 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 he have been countermining? mustn't we have been countermining? mustn't you have been countermining? mustn't they have been countermining?