To be more specific, I am referring to the part under #8: ‘Therefore, four basic units of patavi, āpo, thejo, vāyo arise due to avijjā, and the other four of varna, gandha, rasa, and oja arise due to tanhā….These eight can never be detected in isolation; thus they are called “avinibbhoga rupa“. They always rise together; all eight are there in any suddhāshtaka. The relative “amounts” of each component can vary and thus some suddhāshtaka can be dominated by one component, for example. Even then, all eight are present to some extent. This is tantamount to saying that wherever there is avijjā there is tanhā, and vice versa.’
Please also let me know if I should have posted this in another forum.
Thank you for your help.