Across L031 and L032 the source-list has now been covered by topic: movement and clothing, recitation, posture, places, bodily distractions, impurity, work clothing and bare head, food and mental distraction, counting, Imam or row position, images, fire or sleepers, forehead wiping, fixed Surah choice, and Sutrah.
Because the commentary calls “77” an approximate count, the course does not force an artificial one-to-one numbering where editions parse individual phrases differently.