res=$(cat f| tr ' ' '\n' |head -n 2 |tr '\n' ' ')$(cat f |tr ' ' '\n' |head -n -2 |tail -n +3 |tr -d ',.' |sort |uniq |grep -v "^and$" |tr '\n' ' ' |sed 's/ /, /g' |sed 's/, \([A-Za-z]\+\), $/ and \1./')$(cat f| tr ' ' '\n' |tail -n 2 |tr '\n' ' ')