I have this code in PHP:
$rules = array(
"s0" => array(
"a" => "s1_s2_s3",
"b" => "s2_s3"
),
"s1_s2" => array(
"a" => "s1_s2",
"b" => "s2_s3"
),
);
And want to print it like this:
s0 -- a --- s1_s2_s3
s0 -- b --- s2_s3
s1_s2 -- a --- s1_s2
s1_s2 -- b --- s2_s3
How do I do it?