print for map{ join '|', map sprintf( "%02d", $_ ), $_*8+1 .. $_*8+8 } 0 .. 7;; 01|02|03|04|05|06|07|08 09|10|11|12|13|14|15|16 17|18|19|20|21|22|23|24 25|26|27|28|29|30|31|32 33|34|35|36|37|38|39|40 41|42|43|44|45|46|47|48 49|50|51|52|53|54|55|56 57|58|59|60|61|62|63|64