C11111333133313232233133313331333131133131121131211113311113313131   >>    C1111133313331323223313331333133313113313112113121111331111331313   <<    C11111333133313232233133313331333131133131121131211113311113313133   >>      C11111333133313232233133313331333131133131121131211113311113313132   >>