r=new java.io.BufferedReader(new java.io.InputStreamReader(java.lang.System["in"]));
d={};
for(i=1;l=r.readLine();i++)for(a=l.match(/\w+/g);w=a&&a.pop();)(d[w]=d[w]||[]).push(i);
for(w in d)println(w+":"+d[w].join(" "));