????????
      +---------
GUAEU | URGQTFFF
       -UJQQT
        =====
         QWEEF
        -GUAEU
         =====
         GQFEGF
        -GGTGTQ
         ======
          GQRFJF
         -GGTGTQ
          ======
          ??????

base: 10
letters: AEFGJQRTUW
hints: A << F
difficulty: hard