????????
      +---------
EETGE | NENJEQJT
       -EETGE
        =====
        WJRXYQ
       -WRWGNH
        ======
         WQWHWJ
        -WURRJX
         ======
          WEQEGT
         -WENGQW
          ======
          ??????

base: 13
letters: EGHJNPQRTUWXY
difficulty: medium
missing: P