C2221333133313331311233132313331333133313331322121133131121123121   >>    C222133313331333131123313231333133313331333132212113313112112312   <<    C2221333133313331311233132313331333133313331322121133131121123123   >>      C2221333133313331311233132313331333133313331322121133131121123122   >>