How would you punctuate a sentence that contains a list of items, with several examples for each item. For example: "I have found an existing relationship of qualities through a certain model: words including, between and after; colors red, yellow and blue; numbers five, six and ten."
Notice how the first set seems confusing? The main qualities are words, colors and numbers; with each quality having a set of examples. How could this be made more clear, without changing the ultimate structure of the sentence?