C2221333133313331311233132313331333133313231133132313331333132213233121   >>    C222133313331333131123313231333133313331323113313231333133313221323312   <<    C2221333133313331311233132313331333133313231133132313331333132213233123   >>      C2221333133313331311233132313331333133313231133132313331333132213233122   >>