????????
      +---------
URUHE | LWWERMGW
       -URUHE
        =====
        TNNLTM
       -MLWWTR
        ======
         NTHLFG
        -NNHQTY
         ======
          MQLMRW
         -YGTWQY
          ======
          ??????

base: 14
letters: EFGHLMNQRTUWXY
difficulty: hard
missing: X