C12121223131323223313233231323132322331313331323132313123232311   >>    C1212122313132322331323323132313232233131333132313231312323231   <<    C12121223131323223313233231323132322331313331323132313123232313   >>      C12121223131323223313233231323132322331313331323132313123232312   >>