QTY
      +--------
JRYUL | HXRWXNQ
       -PGQHQ
        =====
        JZHUJN
       -JYPXXT
        ======
         LQQMTQ
        -LLMZYY
         ======
          LZXYT

base: 16
letters: GHJLMNPQRTUVWXYZ
difficulty: hard
hints: N << T, J << Z
missing: V