C2123132222131133131121131211113313231322331333132233131133133313123232212131   >>    C212313222213113313112113121111331323132233133313223313113313331312323221213   <<    C2123132222131133131121131211113313231322331333132233131133133313123232212133   >>      C2123132222131133131121131211113313231322331333132233131133133313123232212132   >>