????????
      ----------
XYTWL ) WUXPWXJY
       -XYTWL
        =====
        JXWURX
       - LTWQY
        ======
         XTTUWJ
        -XUYYQJ
         ======
          UYMUPY
         -UXJNLQ
          ======
          ??????

base: 12
symbols: JLMNPQRTUWXY
difficulty: medium