BEGIN {
	FS = ",";
	getline;
	out = "";
	NR = 0;
}

{	
	data[NR] = $1 " " $2 "\n"
	#out = $1 " " $2 "\n" out;
}
END {
	for (i=NR; i>0; i--) {
		n = NR - i + 1;
		out = out n " " data[i]};
	print out;
}