????????
      +---------
RQYMX | FUGQJXTN
       -RQYMX
        =====
         YNLYX
        -TYTJQ
         =====
          XTHQT
         -ETFFY
          =====
          RLREGN
         - GJNQL
          ======
          ??????

base: 14
letters: EFGHJLMNQRTUXY
difficulty: medium