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'.
The correct plural form for the noun roof is roofs.
You have no parentheses, but the sentence does have two plural nouns.The plural possessive forms for those nouns are:paths; paths'circles; circles'
The plural possessive is diamonds'.
There are two accepted plural forms of the noun vertex: vertices and vertexes.The plural possessive forms are vertices' and vertexes'.
The noun marble is an uncountable (mass) noun as a word for the crystalline metamorphic form of limestone, a word for a substance.The plural form of the noun, reserved for 'types of' or 'kinds of', is marbles.The plural form of the noun marble as a word for a small glass ball used as a toy is also marbles.The plural possessive form (for the substance or the toy) is marbles'.Examples:The marbles' display included an array of lovely colors.The marbles' bag split and the marbles rolled everywhere.
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 is heart's; the plural possessive form is hearts'.
The plural form is founders. The plural possessive is founders'.
The plural form for the noun sergeant is sergeants; the plural possessive form is sergeants'.
The singular possessive form for the noun knife is knife's.The plural form is knives; the plural possessive form is knives'.
The noun 'sister' is not plural and is not possessive.The plural form is sisters.The possessive form is sister's.The plural possessive form is sisters'.
The singular form is goose; the singular possessive form is goose's.The plural form is geese; the plural possessive form is geese's.
The plural possessive form of "cherubim" is "cherubim's."
The plural form is replies. The plural possessive is replies'.
The plural form is valleys. The plural possessive is valleys'.
The plural form is squirrels. The plural possessive is squirrels'.
The plural form is cockroaches; the plural possessive form is cockroaches'.