FWIW, traditional cartomancy offers one way to access the TdM pips. The old
Hedgewytchery site had a useful mnemonic for remembering pip card meanings that can easily translate into tarot as well. (The usual correspondences are Coins: Diamonds, Cups:Hearts, Batons:Clubs, Swords:Spades).
This too is based on numerology, and
broadly consistent with RWS meanings as well. By that what I mean is that most of the RWS meanings are one of several possibilities that can come from the number/element/suit method set forth in that poem.