C123221122233131333132233131313231323132322331311331313231322131   >>    C12322112223313133313223313131323132313232233131133131323132213   <<    C123221122233131333132233131313231323132322331311331313231322133   >>      C123221122233131333132233131313231323132322331311331313231322132   >>