C22121333132313311211113313331333132233131133133313331323222121221   >>    C2212133313231331121111331333133313223313113313331333132322212122   <<    C22121333132313311211113313331333132233131133133313331323222121223   >>      C22121333132313311211113313331333132233131133133313331323222121222   >>