????????
      +---------
UQJNM | QTNUQRTU
       -JNFMR
        =====
        PMUNRR
       -PFMQEQ
        ======
          NRRPT
         -JNFMR
          =====
          PTMWUU
         -PEJPUF
          ======
          ??????

base: 11
letters: EFJMNPQRTUW
difficulty: medium