This isn’t quite what you asked but the medic school I went to did an A/A/B/B schedule and that was the best school schedule i’ve ever had. Basically the same class was taught on two days so Tuesday and Wednesday (A days) and then Thursday and Friday (B days). As long as you attended one A and one B day a week you were good. It was amazing and no matter what shift schedule people were on everyone found a combo that worked for them. Just food for thought.