WLQ
      +--------
TLVXV | TYMHXML
       -TLVXV
        =====
         PZVPM
        -QVYQR
         =====
         WJXWQL
        -WLGUTR
         ======
          LGJLZ

base: 16
letters: GHJLMNPQRTUVWXYZ
difficulty: hard
hints: X << G, V << Y, J << Z
missing: N