C2221333133313331311233132313331333133313331322231333133313331323222212121   >>    C222133313331333131123313231333133313331333132223133313331333132322221212   <<    C2221333133313331311233132313331333133313331322231333133313331323222212123   >>      C2221333133313331311233132313331333133313331322231333133313331323222212122   >>