Hi there,
They are not part of words but Dutch words. Some of them sound like that but I wrote them by memory - sorry about the confusion I have created. I have now the list with me and those particular ones are : som - tom - bom- kom - dom (in English: sum - Tom - ? - come - ?). Others are for example rijk - dijk - kijk...
Ok, so my Dutch is a little rusty!
It had occurred to me that they might be dutch, but still rhyming rather than very very frequently used words such as 'the'.
The wall of words reminds me of a nice list ds' teacher gave them, but in a visually pleasing format. It was a word wave, just a single piece of paper, with a big wave drawn on it, and typed all along the wave line were common sight words from most common/easiest to less common/harder ones towards the end. The teacher asked us to have ds read it from time to time and just mark off where they had to stop or sound out a word and we could easily see from that the progress ds was making in that area. I had forgotten about that one...
I kind of prefer the word wall now I've heard about it, bigger is better around our house

Also, that is so nice to see a great success/turn around for your dd Jen!