WRH
      +--------
WLWJH | EPPLWJX
       -WLWJH
        =====
        WUHFTJ
       -WEJPPP
        ======
          PRWEX
         -FTTRW
          =====
          WELUJ

base: 12
letters: EFHJLPQRTUWX
difficulty: medium
missing: Q