2 random people who aren't mafia become Mason, 2 people who aren't Werewolf become Monk
Two people that aren't Mafia are selected to be Mason, Two people that aren't Werewolf are selected to be Monk
It's possible for Mafia to Monk and for Werewolf to be Mason
Both Mafia can't be both Monks and both Werewolves can't be Mason
13: 2x Mafia Goon, 2x Werewolf, 9x Vanilla Townie