C22212323232133313113313331333132313231333132212132312112121121   >>    C2221232323213331311331333133313231323133313221213231211212112   <<    C22212323232133313113313331333132313231333132212132312112121123   >>      C22212323232133313113313331333132313231333132212132312112121122   >>