# [PowerShell], <s>66</s> <s>37</s> 26 bytes
<sup>-11 bytes thanks to mazzy</sup>

<!-- language-all: lang-powershell -->

    !(($args|group|% c*t)-ne2)

[Try it online!][TIO-jxufzys5]

[PowerShell]: https://github.com/TryItOnline/TioSetup/wiki/Powershell
[TIO-jxufzys5]: https://tio.run/##dU/RboMwDHzPVzCVLrC5UmNCEx72LVM1hbYTKhW0WqXSb2fnANrTFPnssx37fGl/QtcfQ9OMaf3xGF@yLN13h344dO3tMqyTr7drvjkHzsenUqtrdwsqc2QKqojJbAFWXExZqnJSmUGyoIiRbtEQDTCHM4tlRi/HTk/MVDrjK7IVL8STj3SKpzLm5MP6oV/TOtHv6efmuz2ddaKHU7g/ldZqVe@bHlJ3EGVJ0InJFgxentASwywJwkvCOSoMEgCPwxxCSPg7jCfdVgbHDyVOKZZrpDyFPC@Wrn@1jr8 "PowerShell – Try It Online"

Groups up `$l` and iterates through it, checking each group's `count` to see if they're size 2.