FNGQ
      +---------
REYQN | GJEHQLYQ
       -REYQN
        =====
        ENPJFL
       -EPURNE
        ======
         ELGJHY
        -EFTTNL
         ======
          RFPEJQ
         -EQRHNH
          ======
           HHFRG

base: 13
letters: EFGHJLNPQRTUY
difficulty: intermediate