????????
      +---------
FWEQW | EEPMWFPM
       -FWEQW
        =====
        JTPEMF
       -JWJFWM
        ======
         JNQNFP
        -JWJFWM
         ======
          RPEGPM
         -RQLNGW
          ======
          ??????

base: 12
letters: EFGJLMNPQRTW
difficulty: medium