QCY
      +--------
QMLPT | LEQPTEE
       -QMLPT
        =====
        QEUXXE
       -QEEJCX
        ======
          TTLEE
         -LUJXR
          =====
           ERTC

base: 12
letters: CEJLMPQRTUXY
difficulty: medium
hints: Y << T
missing: Y