Maybe this might be what you are looking for.
ui text box("Prefix", #pre)
ui save file("Save", #save)
clear list(%alph)
clear list(%results)
add list to list(%alph, $list from text("a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z", ","), "Delete", "Global")
loop(26) {
navigate("http://t1-completion.amazon.com/search/complete?method=completion&q={#pre}%20{$next list item(%alph)}&search-alias=aps&client=amazon-search-ui&mkt=1&x=updateISSCompletion&sc=1", "Wait")
wait(1)
set(#result, $replace regular expression($find regular expression($document text, ",\\