"conect121.txt" ftp://ftp.dcs.ed.ac.uk/pub/cdw/bbc/conect121.txt
"conect121.zip" ftp://ftp.dcs.ed.ac.uk/pub/cdw/bbc/conect121.zip
hamutils.txt ftp://ftp.dcs.ed.ac.uk/pub/cdw/bbc/hamutils.txt
hamutils.zip ftp://ftp.dcs.ed.ac.uk/pub/cdw/bbc/hamutils.zip
plotmate.txt ftp://ftp.dcs.ed.ac.uk/pub/cdw/bbc/plotmate.txt
plotmate.zip ftp://ftp.dcs.ed.ac.uk/pub/cdw/bbc/plotmate.zip