They could be useful when doing theoretical works...

Dichotomies of Types

Basic : 1 letter, uppercase, same than Myers-Briggs.

Derivative : 3 letters, uppercase, first letter may be vowel but not next letters (Y is not considered vowel).

DMC / ARS = Democratic / Aristocratic
JDC / DCS = Judicious / Decisive
SBJ / OBJ = Subjectivist / Objectivist
PRC / RSL = Process / Result
NGT / PST = Negativist / Positivist
CMP / OBS = Compliant / Obstinate
STR / TCT = Strategical / Tactical
ASK / DCL = Asking / Declaring
STT / DYN = Static / Dynamic
EMT / CNS = Emotivist / Constructivist
CRF / FRS = Carefree / Farsighted

Dichotomies of Functions

2 letters, uppercase, idem.

SG / WK - Strong / Weak
AC / PR - Accepting / Producing
CS / SC - Conscious / Subconscious
IN / CN - Inert / Contact
ES / SN - Estimated / Situational
VB / NV - Verbal / Non-Verbal

Dichotomies of Aspects

1 letter, lowercase.

i / e - Internal / External
s / d - Statics / Dynamics
b / f - Bodies / Fields
o / x - "Complete / Fractional" - possibly means "Integral / Differential" - related to Perception / Judgement.
n / p - Negative / Positive
+ / - - Process / Result

Intertype Relationships

3 letters, first uppercase, second and third lowercase.

(some relationships have different names)

Idn - Identity
Dlt - Duality
Act - Activation
Mrr - Mirror
Knd, Cmp, Cng - Kindred , Comparative , Congenerity
Pdl, Sdl - Partial duality, Semi-duality
Bsn, Lkl, Cpr - Business , Look-a-Like , Cooperation
Mrg, Ill - Mirage , Illusionary
Spg - Super-ego
Ext / Cnt - Extinguishment / Contrary
Qsi - Quasi-identity
Cnf - Conflict
Rqs, Bnf - Request / Benefit
Spr - Supervision

Possible nomenclature for asymmetrical relationships :

RqP, BnP - Request, Passive - Beneficiary
RqA, BnA - Request, Active - Benefactor
SvP - Supervision, Passive - Supervisee
SvA - Supervision, Active - Supervisor

a >R> b - a Benefactor to b
a >B> b - idem
a >S> b - a Supervisor to b