#!perl -l for(@c=split'',pop;@c;){print@c;@c=map{$_=$c[$_]+$c[$_+1];$_-=9*($_>9)}0..@c-2}
#!perl for(@c=split'',$ARGV[0];@c>0;){print@c,' ';@c=map{$_=$c[$_]+$c[$_+1];$_-=9*($_>9)}0..@c-2;}