C222123232321333131133133313331323132313331322121323123132213121   >>    C22212323232133313113313331333132313231333132212132312313221312   <<    C222123232321333131133133313331323132313331322121323123132213123   >>      C222123232321333131133133313331323132313331322121323123132213122   >>