[gku]

Hogei, twenty in basque, is said to be related to other Celtic languages, for example, ugain in Welsh and ugent in Breton. I miss a note in https://www.omniglot.com/celtiadur/2023/07/11/twenty/.

[yorwba]

The connection doesn't appear to be generally accepted: https://www.sussex.ac.uk/webteam/gateway/file.php?name=lxwp2...