C31232233133313221211113313331333133313331212111113331333131213231312321   >>    C3123223313331322121111331333133313331333121211111333133313121323131232   <<    C31232233133313221211113313331333133313331212111113331333131213231312323   >>      C31232233133313221211113313331333133313331212111113331333131213231312322   >>