????????
      ----------
JNPNM ) QTPNQNMM
       -MWQNMN
        ======
         QMTMTM
        -MWQNMN
         ======
          QXCWRM
         -QCTYYC
          ======
          ??????

base: 12
symbols: CJMNPQRTUWXY
missing: U
difficulty: hard