????????
      +---------
NMTGR | RHPPMMWN
       -NMTGR
        =====
        NWNENM
       -NTQJMX
        ======
         XPGJEW
        -XWGXHG
         ======
          TUPERN
         - LHPMW
          ======
          ??????

base: 14
letters: EGHJLMNPQRTUWX
difficulty: medium