php正则表达式问题？？

Question

$pattern = "/(abcd){1,2}.*(efgh){1,2}/";
$string = "abcd123efgh456";
preg_match_all($pattern,$string,$result);

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我这样写会吧abcd和efgh都放到result数组中，我希望把abcd别放到数组里，而把efgh放到数组里，这种pattern怎么写呢？

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谢谢

Answer 1

(?:abcd)