Puzzle of the Week #338 - Base 4 Riddle

I have taken a riddle, and I have replaced each of the letters with the numbers that denote their position in the alphabet. However, I have used the base 4 number system. 

Be careful, as some sequences of numbers could lead to several words, for instance 31110 could mean CAT (3,1,110), but could equally mean MAD (31,1,10). Can you decode the riddle and then solve it?

21'31  12331113210  2132  10333323103,  1033110211211103  13210  31211101101132103;  13210  33121101132  2132  1102011  1001113103  3312  1003011211211130  23211101101132103.  113201110  131  21?