C2212133313231331121111331333133313223313113313331333131133131133132312121   >>    C221213331323133112111133133313331322331311331333133313113313113313231212   <<    C2212133313231331121111331333133313223313113313331333131133131133132312123   >>      C2212133313231331121111331333133313223313113313331333131133131133132312122   >>