All 22 Letters of Alef Beis Are Found in the Mogen Dovid

I don't know where he found it, but my Dad sent me an e-mail showing how all of the 22 letters of the Alef Beis are found in the Mogen Dovid. Another friend of mine showed me how the 10 sefiros are alluded to in the shape of the Mogen Dovid as well. Does anyone know what the basis for all of this is? (The only anomaly in this diagram is that in addition to the main 22 letters of the Alef Beis, they also include only 2 "Ender" letters, Mem and Nun.)





-Dixie Yid