?????????
      +----------
LJTLT | PTRLPFYYF
       -FJGFG
        =====
        LJYNLF
       -LRTMNY
        ======
         LCCFMY
        -LMTRYN
         ======
           FNXGY
          -MJNMN
           =====
           LNCYGF
          -LPTFGC
           ======
           ??????

base: 12
letters: CFGJLMNPRTXY
difficulty: intermediate