English verb conjugation
MUST GROIN

Regular verb: groin - groined - groined

Affirmation

Simple form	V-ing form
I must groin you must groin he must groin we must groin you must groin they must groin	I must be groining you must be groining he must be groining we must be groining you must be groining they must be groining
Perfect	V-ing perfect
I must have groined you must have groined he must have groined we must have groined you must have groined they must have groined	I must have been groining you must have been groining he must have been groining we must have been groining you must have been groining they must have been groining

Negation

Simple form	V-ing form
I must not groin you must not groin he must not groin we must not groin you must not groin they must not groin	I must not be groining you must not be groining he must not be groining we must not be groining you must not be groining they must not be groining
Perfect	V-ing perfect
I must not have groined you must not have groined he must not have groined we must not have groined you must not have groined they must not have groined	I must not have been groining you must not have been groining he must not have been groining we must not have been groining you must not have been groining they must not have been groining

Interrogative form

Simple form	V-ing form
must I groin? must you groin? must he groin? must we groin? must you groin? must they groin?	must I be groining? must you be groining? must he be groining? must we be groining? must you be groining? must they be groining?
Perfect	V-ing perfect
must I have groined? must you have groined? must he have groined? must we have groined? must you have groined? must they have groined?	must I have been groining? must you have been groining? must he have been groining? must we have been groining? must you have been groining? must they have been groining?

Interro-negative form

Simple form	V-ing form
must I not groin? must you not groin? must he not groin? must we not groin? must you not groin? must they not groin?	must I not be groining? must you not be groining? must he not be groining? must we not be groining? must you not be groining? must they not be groining?
Perfect	V-ing perfect
must I not have groined? must you not have groined? must he not have groined? must we not have groined? must you not have groined? must they not have groined?	must I not have been groining? must you not have been groining? must he not have been groining? must we not have been groining? must you not have been groining? must they not have been groining?