C11111333133313232233133313331333131133132233133313113313231333131231332131221   >>    C1111133313331323223313331333133313113313223313331311331323133313123133213122   <<    C11111333133313232233133313331333131133132233133313113313231333131231332131223   >>      C11111333133313232233133313331333131133132233133313113313231333131231332131222   >>