English verb conjugation
MUST COUNTERMARCH

Regular verb: countermarch - countermarched - countermarched

Affirmation

Simple form	V-ing form
I must countermarch you must countermarch she must countermarch we must countermarch you must countermarch they must countermarch	I must be countermarching you must be countermarching she must be countermarching we must be countermarching you must be countermarching they must be countermarching
Perfect	V-ing perfect
I must have countermarched you must have countermarched she must have countermarched we must have countermarched you must have countermarched they must have countermarched	I must have been countermarching you must have been countermarching she must have been countermarching we must have been countermarching you must have been countermarching they must have been countermarching

Negation

Simple form	V-ing form
I must not countermarch you must not countermarch she must not countermarch we must not countermarch you must not countermarch they must not countermarch	I must not be countermarching you must not be countermarching she must not be countermarching we must not be countermarching you must not be countermarching they must not be countermarching
Perfect	V-ing perfect
I must not have countermarched you must not have countermarched she must not have countermarched we must not have countermarched you must not have countermarched they must not have countermarched	I must not have been countermarching you must not have been countermarching she must not have been countermarching we must not have been countermarching you must not have been countermarching they must not have been countermarching

Interrogative form

Simple form	V-ing form
must I countermarch? must you countermarch? must she countermarch? must we countermarch? must you countermarch? must they countermarch?	must I be countermarching? must you be countermarching? must she be countermarching? must we be countermarching? must you be countermarching? must they be countermarching?
Perfect	V-ing perfect
must I have countermarched? must you have countermarched? must she have countermarched? must we have countermarched? must you have countermarched? must they have countermarched?	must I have been countermarching? must you have been countermarching? must she have been countermarching? must we have been countermarching? must you have been countermarching? must they have been countermarching?

Interro-negative form

Simple form	V-ing form
must I not countermarch? must you not countermarch? must she not countermarch? must we not countermarch? must you not countermarch? must they not countermarch?	must I not be countermarching? must you not be countermarching? must she not be countermarching? must we not be countermarching? must you not be countermarching? must they not be countermarching?
Perfect	V-ing perfect
must I not have countermarched? must you not have countermarched? must she not have countermarched? must we not have countermarched? must you not have countermarched? must they not have countermarched?	must I not have been countermarching? must you not have been countermarching? must she not have been countermarching? must we not have been countermarching? must you not have been countermarching? must they not have been countermarching?