LXW
     +-------
PNQL | JTLTWQ
      -TYRQ
       ====
       PJLQW
      -PGGRN
       =====
         UENQ
        -JGQG
         ====
         PJWN

base: 13
letters: EGJLNPQRTUWXY
difficulty: medium
missing: X