????????
      +---------
ECFTU | UWEUWYAT
       -ECFTU
        =====
        WAYYYY
       -WQWUCE
        ======
         WGFGWA
        -WCAQWA
         ======
          WTUTTT
         - AYAWC
          ======
          ??????

base: 10
letters: ACEFGQTUWY
difficulty: easy