Hindustani has personal pronouns for the first and second persons, while for the third person demonstratives are used, which can be categorised deictically as proximate and non-proximate. tū, tum, and āp are the three "2P" pronouns, constituting a threefold scale of sociolinguistic formality: respectively, "intimate", "familiar", and "formal". The "2P" intimate conjugations are grammatically singular while the "2P" familiar and formal conjugations are grammatically plural. For the non-personal pronouns (demonstrative, relative, and interrogative) the plural forms are also the formal forms. Pronouns in Hindustani do not distinguish gender however they distinguish the nominative, oblique, and the common accusative/dative grammatical cases. The latter-most, often called a set of contracted forms, is used synonymously with the dative/accusative pronoun constructed from the oblique case by suffixing the dative/accusative postposition ko. So, for e.g., mujhe and mujhko are synonymous dative/accusative pronouns.