IKEA sold that too: https://www.ebay.co.uk/itm/306072403869
In Hungarian it's A, Á, B, C, Cs, D, Dz, Dzs, E, É, F... So Cu--- comes before Cs---
At least in Norwegian, ae, oe, and aa is also traditionally collated as if they were using these letters, so a word starting "aa" comes at the end of the alphabet, after z, oe and ae....
A B C Č D Ď E F G H Ch I J…
• „če“ goes after both „ca“ and „ci“, but „ác“ goes between „ab“ and „ad“
• „cha“ goes after „da“ and „ha“