Universal 1134:
- Original
 - If a dual, or any other number, is differentiated for a particular person of non-pronominal agreement forms, there will be a dual, or other number, for this person in pronouns.
 - Standardized
 - IF a dual is differentiated for a particular person of non-pronominal agreement forms, THEN there will be a dual, or other number, for this person in pronouns.
In fact, more generally:
IF any number is differentiated for a particular person of non-pronominal agreement forms, THEN this number will also be distinguished for this person in pronouns. - Keywords
 - number, dual, agreement, person, pronoun
 - Domain
 - inflection, syntax
 - Type
 - implication
 - Status
 - achronic
 - Quality
 - statistical
 - Basis
 - languages surveyed in Plank 1989
 - Source
 - Plank 1989: 307
 
- Counterexamples
 - Tunica (isolate remotely related to Algonquian) and Aleut (Eskimo-Aleut) (Plank 1989: 307).
 
diachronic, if these agreement forms derive from pronouns.