????????
      ----------
LMMEL ) LYTTLQUQ
       -LMMEL
        =====
         YTRMQ
        -YMQUY
         =====
          XXYYU
         -XMQXX
          =====
           XUXQQ
          -XMQXX
           =====
           ?????

base: 10
symbols: EFLMQRTUXY
difficulty: hard
missing: F