English verb conjugation
MUST FIN

Regular verb: fin - fined - fined

Affirmation

Simple form	V-ing form
I must fin you must fin he must fin we must fin you must fin they must fin	I must be fining you must be fining he must be fining we must be fining you must be fining they must be fining
Perfect	V-ing perfect
I must have fined you must have fined he must have fined we must have fined you must have fined they must have fined	I must have been fining you must have been fining he must have been fining we must have been fining you must have been fining they must have been fining

Negation

Simple form	V-ing form
I must not fin you must not fin he must not fin we must not fin you must not fin they must not fin	I must not be fining you must not be fining he must not be fining we must not be fining you must not be fining they must not be fining
Perfect	V-ing perfect
I must not have fined you must not have fined he must not have fined we must not have fined you must not have fined they must not have fined	I must not have been fining you must not have been fining he must not have been fining we must not have been fining you must not have been fining they must not have been fining

Interrogative form

Simple form	V-ing form
must I fin? must you fin? must he fin? must we fin? must you fin? must they fin?	must I be fining? must you be fining? must he be fining? must we be fining? must you be fining? must they be fining?
Perfect	V-ing perfect
must I have fined? must you have fined? must he have fined? must we have fined? must you have fined? must they have fined?	must I have been fining? must you have been fining? must he have been fining? must we have been fining? must you have been fining? must they have been fining?

Interro-negative form

Simple form	V-ing form
must I not fin? must you not fin? must he not fin? must we not fin? must you not fin? must they not fin?	must I not be fining? must you not be fining? must he not be fining? must we not be fining? must you not be fining? must they not be fining?
Perfect	V-ing perfect
must I not have fined? must you not have fined? must he not have fined? must we not have fined? must you not have fined? must they not have fined?	must I not have been fining? must you not have been fining? must he not have been fining? must we not have been fining? must you not have been fining? must they not have been fining?