The plural for roof is roofs.
The plural possessive form is roofs'.
example: All of the roofs' colors were different shades of red clay.
The singular possessive form for the noun roof is roof's.
example: The roof's tiles were made of red clay.
Plural. Roof is singular.
The possessive form for the singular noun roof is roof's.The plural form for the noun roof is rooves.The plural possessive form is rooves'.
Singular possessive: secretary's Plural: secretaries Plural possessive: secretaries'
The plural is relatives. The plural possessive is relatives'.
The plural is lads. The plural possessive is lads'.
The plural form is Mexicans. The plural possessive is Mexicans'.
The plural possessive of stepsister is stepsisters'.
The plural form is inches. The plural possessive is inches'.
The plural form is suffixes. The plural possessive is suffixes'.
The plural form is echoes. The plural possessive is echoes'.
Coaster's is singular possessive. The plural is coasters, the plural possessive is coasters'.
The plural possessive is pals'.
Studies' is the plural possessive of study.