Sorry!

I just re-read

C is the root, D is the 2nd (passing note), Eb is the minor 3rd, E is the major 3rd, G is the 5th and Bd is the 7th. Now you wouldn't play all these at once. The passing note is only play with the minor 3rd chord (which would be C Eb G, in this case). And these relationships are true of each row--root, passing note, minor 3rd, major 3rd, 5th and 7th.

I'll try that and report back.