How duals pair up according to subtypes

[roger557]

Duals should pair up with the opposite "axis" dual. I have understood this after observing many dual couples:

ILE-Ne - SEI-Fe
ILE-Ti - SEI-Si
LII-Ti - ESE-Si
LII-Ne- ESE-Fe

SLE-Se - IEI-Fe
SLE-Ti - IEI-Ni
LSI-Ti - EIE-Ni
LSI-Se - EIE-Fe

SEE-Se - ILI-Te
SEE-Fi - ILI-Ni
ESi-Fi - LIE-Ni
ESi-Se - LIE-Te

EII-Fi - LSE-Si
EII-Ne - LSE-Te
IEE-Ne - SLI-Te
IEE-Fi - SLI-Si

You're welcome to observe these pairings IRL to see that they are optimal. With this pairing, the compatibility is maximal, but they're also trickier to stablish as per the duality dynamic.
With the same axis dual, the ITR is a mixture of activity and semi-dual, which in itself is not "bad", but not the real deal duality. You can also fight with you same axis dual quite a bit.

Next part of the compatibility schematic; DCNH:

Dominant (D): N - Optimal
D- Bad
H- Good
C- Tricky

Creative (C): H - Optimal
D - Tricky
N - Bad
C - Very good

Harmonizing (H): C - Optimal
H - Good
N - Tricky
D - Good

Normalizing (N): D - Optimal
H - Tricky
C - Bad
N - Good

I wanted to add that DCNH compatibility is very, very important when pair-bonding, even to the point of making less-than-ideal ITR's socionic wise, pretty good (like for example, Contrary can seem much better if you match on the DCNH).

[Armitage]

Interesting, but wouldn't the optimal DCNH pairs not contradict that duals of the opposite axes would make the best pairs? Because Dominant types display stronger Te or Fe and Normalizing types emphasize Fi or Ti more. While Creative types express Se or Ne more, and Harmonizing types Ni or Si.
Also, doesn't this become so precise that the chance of finding the optimal Socionics DCNH enneagram dual becomes nigh impossible, because so few people would be "right"?

[roger557]

Interesting, but doesn't this begin to become so precise that the chance of finding the optimal Socionics DCNH enneagram dual becomes nigh impossible, because so few people would be "right"?

God guides you. He guided me to my twin flame, an H-ESI-Fi girl. It didn't work out, but that's another matter.