#!/bin/ksh

let n=1
old_line=""
new_line=""


while read line
do
	new_line="$line"
	if [ "_$old_line" = "_$line"  ]
	then
		let n=$n+1
	else
		if [ "_$old_line" != "_" ]
		then
			echo $n $old_line
			let n=1
		fi
		old_line="$line"
	fi
done
echo $n $new_line