#!/usr/bin/perl
$pid = open FILTER,"|-";
die unless defined $pid;
if ($pid) {
    open WORD, $ARGV[0] or die "Can't read $ARGV[0]\n";
    $START = 000000000;
    $BLOCK = 100000000;
    sysseek WORD, $START, 0;
    while (sysread(WORD, $_, 10240)) {
	while ( /\G (.*?) (?:
			((?:[\020-\117]\04)+) |
			((?:[\10\12\040-\177]\00)+)
		    ) /xgs ) {
	    ($junk,$russian,$english) = ($1,$2,$3);
	    $russian=~s/\04//g;
	    $russian=~tr/\020-\117/\300-\377/;
	    $english=~s/\00//g;
	    print FILTER $russian,$english;
	    print FILTER "\n" if length($junk)
	}
	last if sysseek(WORD,0,1)>$START+$BLOCK;
    }
    close FILTER;
} else {
    while(<STDIN>) {
	print unless /^.{0,3}$/ || /(.)\1\1/;
    }
}