????????
      +---------
RTUWF | LLPGTGTT
       -RTUWF
        =====
        UJEFUG
       -UPMUUT
        ======
         RFLQTT
        -RMEFHE
         ======
          UEWEJT
         -UTPGWU
          ======
          ??????

base: 13
letters: EFGHJLMPQRTUW
difficulty: medium