In Wamba Wamba many names of things that might be owned by something, or be a part of something were said so often that the possessive ending 'uk' (or kuk, guk, nuk) was kept on the word just like 'larnuk'.
1) Do a word search for 'uk' and see how many words have 'uk' on the end.
2) Make a list of words with different joining letters eg (k)uk, (g)uk