C111113331333132322331333133313331311331322211211113313113313233121   >>    C11111333133313232233133313331333131133132221121111331311331323312   <<    C111113331333132322331333133313331311331322211211113313113313233123   >>      C111113331333132322331333133313331311331322211211113313113313233122   >>