<?php
$i = 0;
$card_list = array(2,3,4,5,6,7);
$answers = [];
while($i < 1000000){
	$copyd_list = $card_list;
	$array1 = array_rand($copyd_list,2);
	unset($copyd_list[$array1[0]]);
	unset($copyd_list[$array1[1]]);

	$array2 = array_rand($copyd_list,2);
	unset($copyd_list[$array2[0]]);
	unset($copyd_list[$array2[1]]);

	$array3 = array_rand($copyd_list,2);
	unset($copyd_list[$array3[0]]);
	unset($copyd_list[$array3[1]]);

	if(
	isMaxCommonDivisor1($card_list[$array1[0]], $card_list[$array1[1]]) and
	isMaxCommonDivisor1($card_list[$array2[0]], $card_list[$array2[1]]) and
	isMaxCommonDivisor1($card_list[$array3[0]], $card_list[$array3[1]])){
		$key = (string) $card_list[$array1[0]].$card_list[$array1[1]].$card_list[$array2[0]].$card_list[$array2[1]].$card_list[$array3[0]].$card_list[$array3[1]];
		$answers[$key] = true;
	}
	$i++;
	}
	var_dump($answers);
	echo count($answers)."通り\n";
function isMaxCommonDivisor1($i1, $i2){
	if(($i1 % 2 === 0) and ($i2 % 2 === 0)) return false;
	if(($i1 % 3 === 0) and ($i2 % 3 === 0)) return false;
	return true;
}