????????
      ----------
QQQJN ) UQXTTJGC
       -QQQJN
        =====
        XUJJGJ
       -XLLCTY
        ======
         GTQCCG
        -GGGXNT
         ======
          NCNWLC
         -JYYTPC
          ======
          ??????

base: 12
symbols: CGJLNPQTUWXY
difficulty: hard