????????
      +---------
EEGEE | UUGUJGUU
       -FFXFF
        =====
        RNWNYG
       - WWFWW
        ======
         RYJNXU
        -RHHGHU
         ======
          RUHUNU
         -RJJNJX
          ======
          ??????

base: 11
letters: EFGHJNRUWXY
difficulty: intermediate