Question: ratio of Words to Phrases

[Skivling]

I understand about making each skill about the same size, but what would be the recommended ratio of words to phrases? If I'm teaching 'How are you?' and 'I am ____', should I have phrases that include all the words or just some examples so the learner learns the pattern?
Currently I am putting 10-15 words and 5-10 phrases. What do other courses generally do?

How does the web app adapt the amount of word challenges versus phrase challenges in each lesson depending on what is in the skill? And how does it count spaced repetition / "learned" amount for both words and phrases?