C11111333133313232233133313331333131133132233133313113313232233133333331323211   >>    C1111133313331323223313331333133313113313223313331311331323223313333333132321   <<    C11111333133313232233133313331333131133132233133313113313232233133333331323213   >>      C11111333133313232233133313331333131133132233133313113313232233133333331323212   >>