#!/usr/bin/perl -w
use strict;

$;='|';@_=(0,0);@;=map[split/,/],split/;/,"',106,0,0,1;1,',0,1,0;0,0
,',1,1;0,97,112,',0;1,0,104,0,'";{$;[$_[0]][$_[1]]=~/[1-9]/?($;{$_[
$;eq'|']}++&&last,$;=$;eq'-'?'|':'-',$_{$;[$_[0]][$_[1]]}++,($_[$;eq
'|']+=1)%=@;):(($_[$;eq'|']+=1)%=@;);redo}print chr for reverse keys%_

##</code><code>##


#!/usr/bin/perl
use strict;
@;=map[split/,/],split/;/,<DATA>;--$|;{$;[$_[0]][$_[1]]=~
/[1-9]/?($;{$_[$|--]}++&&last,$_{$;[$_[0]][$_[1]]}++):8,(
$_[$|]+=1)%=@;;redo}print chr for reverse 10,keys%_ __END__
',106,0,0,88;4,',0,7,0;0,0,',12,94;0,97,112,',0;5,0,104,0,'