????????
      +---------
WTEEM | WLWGEGFA
       -WTEEM
        =====
         GTTLG
        -WTEEM
         =====
          LLWTF
         -WTEEM
          =====
          EGHAWA
         -EMWTTG
          ======
          ??????

base: 9
letters: AEFGHLMTW
difficulty: intermediate