C1111233131211111211113313331333133313232313331333131211331223321   >>    C111123313121111121111331333133313331323231333133313121133122332   <<    C1111233131211111211113313331333133313232313331333131211331223323   >>      C1111233131211111211113313331333133313232313331333131211331223322   >>