YLUELL
      +-----------
GUELW | UWLUEGXWUY
       -QQUGM
        =====
         QGWEG
        -GUELW
         =====
         GTXQUX
        -GLLGYM
         ======
          GWTXXW
         -GWMYGW
          ======
            TTGMU
           -GUELW
            =====
             WGEGY
            -GUELW
             =====
             LWMLQ

base: 10
letters: EGLMQTUWXY
difficulty: intermediate
restrictions: no multiplication