$le["n"]["n"] = $n <= $n;
$le["n"]["b"] = $n <= $b;
$le["n"]["v"] = $n <= $v;
$le["n"]["s"] = $n <= $s;

$le["b"]["n"] = $b <= $n;
$le["b"]["b"] = $b <= $b;
$le["b"]["v"] = $b <= $v;
$le["b"]["s"] = $b <= $s;

$le["v"]["n"] = $v <= $n;
$le["v"]["b"] = $v <= $b;
$le["v"]["v"] = $v <= $v;
$le["v"]["s"] = $v <= $s;

$le["s"]["n"] = $s <= $n;
$le["s"]["b"] = $s <= $b;
$le["s"]["v"] = $s <= $v;
$le["s"]["s"] = $s <= $s;
