1st pic, the front of the end, with +E left, +F right, +X up, -X down.
2nd, at E=0, looking towards +E.
3rd, at E=0, towards +F (-E).
4th, at E=0, X=0, looking up towards +X.
5th, at E=0, X=0, looking down towards -X.
I'm a little shaky on the -X values, I don't have anything to check them against, and I lost my code to put the signs on the front of the blocks. Will validate -X next by re-coding the sign process.
Pretty sure those rays aren't supposed to be there across F, -X.
Confirmed, minor bugs :)
There are patterns in plus X that seem to be mirrored but rotated in minus X. -X appears to be much more compact across N space. I think the signs will show something interesting.
Here's something else, this is the same bruteforce view, but plotting by D instead of X. -X has positive D's as well, so they're inverted for the purpose of the render. It would seem that -X is a perfect mirror in terms of E,D,N.
my sides