knuth ~:229> pl -f dcg5.pl
% /home/keller/dcg5.pl compiled 0.01 sec, 9,632 bytes
Welcome to SWI-Prolog (Multi-threaded, Version 5.6.17)
Copyright (c) 1990-2006 University of Amsterdam.
SWI-Prolog comes with ABSOLUTELY NO WARRANTY. This is free software,
and you are welcome to redistribute it under certain conditions.
Please visit http://www.swi-prolog.org for details.

For help, use ?- help(Topic). or ?- apropos(Word).

?- show(10).

01
0011
000111
00001111
0000011111
000000111111
00000001111111


Yes
?-