HPU
       +---------
ERGEGF | UCRREGTM
        -QYCQCP
         ======
         EQRTCRT
        -EQCECHP
         =======
           RGCTMM
          -YFGTTP
           ======
           EEGCFQ

base: 12
letters: CEFGHMPQRTUY
difficulty: easy