What are the second person singular nominative prounouns?

The second person, personal pronoun is you.

The pronoun 'you' functions as a subject or an object in a sentence.

The pronoun 'you' functions as a singular or a plural pronoun.

The second person, possessive pronoun is yours.

The pronoun 'yours' functions as a subject or an object in a sentence.

The pronoun 'yours' functions as a singular or a plural pronoun.

The second person, possessive adjective is your.

The pronoun 'your' can describe a noun that is a subject or an object in a sentence.

The pronoun 'your' can take the place of a singular or a plural noun.

Examples:

Jack, you can wash up for lunch now. (singular subject)

Children, you can wash up for lunch now. (plural subject)

Lunch is ready. Jack, yours is on the table. (singular subject)

Lunch is ready. Children, yours is on the table. (plural subject)

Jack, your lunch is ready. (singular, describes the subject noun)

Children, your lunch is ready. (plural, describes the subject noun)