????????
      +---------
EWFGU | GGUQWLMQ
       -WRYHT
        =====
        LXEXQL
       -LMFULQ
        ======
          QEMEM
         -XRWYG
          =====
           YTRWQ
          -GQMYL
           =====
           ?????

base: 13
letters: EFGHLMQRTUWXY
difficulty: medium