C2221333133313331311233132313331333133313131133132333132313221221   >>    C222133313331333131123313231333133313331313113313233313231322122   <<    C2221333133313331311233132313331333133313131133132333132313221223   >>      C2221333133313331311233132313331333133313131133132333132313221222   >>