C11111333133313232233133313331333131133131211111333132323223321   >>    C1111133313331323223313331333133313113313121111133313232322332   <<    C11111333133313232233133313331333131133131211111333132323223323   >>      C11111333133313232233133313331333131133131211111333132323223322   >>