for my $href ( @AoH ) {
  for my $key ( sort keys %$href ){
    if ( ! exists $sequences{$key} ) {
        warn "KEY $key in File1 not found in File2\n";
        next;
    }
    if ( length( $sequences{$key} ) < $href->{$key} ) {
        warn "KEY $key: File2 string length too short for File1 position value\n";
        next;
    }
    my $index = rindex( $sequences{$key}, "TTT", $href->{$key} );
    if ( $index < 0 ) {
        warn sprintf( "KEY %s: No TTT in File2 string prior to position %d\n",
                      $key, $href->{$key} );
        next;
    }
    $index += 3 while ( ($index + 3) < $href->{$key} );
    print "$key $href->{$key} " . substr($sequences{$key}, $index, 3) . "\n";
}