C13332313311211113313331333133313331323321333133313232223322121   >>    C1333231331121111331333133313331333132332133313331323222332212   <<    C13332313311211113313331333133313331323321333133313232223322123   >>      C13332313311211113313331333133313331323321333133313232223322122   >>