Template:ClassMatrix

{{#lua:

 local H = {};
 local T = {};
 for id in stdin:gmatch("%w+") do
   str = string.sub(id,{{{2}}},{{{3}}});
   if (H[str] == nil)
     then H[str] = 1; table.insert(T, str);
     else H[str] = H[str] + 1;
   end
 end
 table.sort(T);
 for i=1,table.getn(T) do
   local k = T[i];
   print(k .. H[k]);
 end

| }}