WWF
      +--------
HYWEE | LNNMEGH
       -QXHYY
        =====
         XYNFG
        -QXHYY
         =====
         EGGHUH
        -EMLLYH
         ======
          UFGQR

base: 13
letters: EFGHLMNQRUWXY
difficulty: hard
missing: R