#!/usr/bin/awk -f
BEGIN {
	maks=0
}

$3 > 50 && maks==0 {
	chr=$1;
	start=$2;
	maks=$3;
}
start != 0 && $3 > maks {
	maks=$3;
}
chr != $1 && start !=0 {
	print chr"\t"start"\t"$2;
        chr=0;
        start=0;
        maks=0;
}
start != 0 && ($3 + 10) < maks {
	print chr"\t"start"\t"$2;
	chr=0;
	start=0;
	maks=0;
}

