C2212133313231331121111331333133313223313113313331333131133133313312121   >>    C221213331323133112111133133313331322331311331333133313113313331331212   <<    C2212133313231331121111331333133313223313113313331333131133133313312123   >>      C2212133313231331121111331333133313223313113313331333131133133313312122   >>