C132233133112121111331333133313331312121111133313331323123232212121   >>    C13223313311212111133133313331333131212111113331333132312323221212   <<    C132233133112121111331333133313331312121111133313331323123232212123   >>      C132233133112121111331333133313331312121111133313331323123232212122   >>