#!/usr/bin/awk -f
BEGIN {
    ol = -1;
}

NR <= 4 {
    print $0;
}

NR > 4 {
    f = $1;
    l = $2;
    c = l - f + 1;
    if ((ol + 1) != f) {
	print "You blew it @ line", NR > "/dev/stderr"
	exit -1;
    }
    ol = l;
    print c;
    
    d = $3;
    print d;
    d = $4;
    print d;
    for (i = 5; i < NR; i++) {
	$(i - 4) = $i;
    }
    NF -= 4;
    print $0;
}

END {
    print 0;
}