MQRL
    +-------
MXX | RHMNTG
     -PGE
      ===
      HQEN
     -HHQL
      ====
       MQGT
      -MMRF
       ====
         GRG
        -XLH
         ===
         LPE

base: 13
letters: EFGHLMNPQRTXY
difficulty: medium
missing: Y