Datapoint Colloquial Singapore English (Singlish)/Invariant tag can or not?

Variety: Colloquial Singapore English (Singlish)
Feature: Invariant tag can or not?
Value: A - feature is pervasive or obligatory
Informants: Lisa Lim and Umberto Ansaldo

Examples

Example 3598:
Answer the question, can or not?
Do you know the answer to the question?'