????????
      +---------
JEXRQ | EETEYNRJ
       -JEXRQ
        =====
        WPYUGN
       - TNRPG
        ======
         WWFMGR
        - TNRPG
         ======
          JJXMFJ
         -JWWTNE
          ======
          ??????

base: 14
letters: EFGJMNPQRTUWXY
difficulty: hard