#!/bin/bash
d=$(date --date '3 years ago 3 months ago' +%y%m%d%H%M%S)
while read line; do
	if [ ${line:0:1} == 'R' ]; then
		if [[ 10#${line:2:12} -gt 10#${d} ]]; then
			echo "${line}"
		fi
	fi
done