????????
      ----------
UFJEH ) PYQFNHXG
       -UFJEH
        =====
         JGMJH
        -XJXNF
         =====
          HXRFX
         -TXPPJ
          =====
          UMUTQG
         - QNGFM
          ======
          ??????

base: 14
symbols: EFGHJMNPQRTUXY
difficulty: medium