The possessive form of the singular noun piano is piano's.
Example: The piano's owner is asking for four hundred dollars.
The plural possessive is pianos'.
piano's
Pianos
The singular possessive is fish's.
Buzz's is the singular possessive.
The possessive form is Amos's.
The singular possessive form is foot's.
The singular possessive form is box's.
The genitive singular of all English nouns is formed by adding -'s: piano's
Quantum is singular, not singular possessive. The singular possessive form is quantum's.
The singular possessive form of "test" is "test's".
The singular possessive pronouns are "my," "mine," "your," "yours," "his," "her," and "its."
The singular possessive of "ant" is "ant's" and the plural possessive is "ants'".
Museum is singular. Museum's is singular possessive. Museums is plural. Museums' is plural possessive.
The singular possessive form of "classmate" is "classmate's."
The singular possessive of dish is dish's
Taco's is the singular possessive.
The singular possessive is Martin's.
The singular possessive is fish's.
Grave's is the singular possessive.