The plural possessive form for the noun trout is trouts'.
The plural form of the noun 'trout' is trout.The singular and plural form are the same.The singular and plural possessive forms are also the same: trout's.
The possessive form for the plural noun wives is wives'.
The plural possessive noun of molecules is molecules' .
The plural form for the noun buzz is buzzes; the plural possessive form is buzzes'.
The plural possessive noun for "vowel" is "vowels'".
trout
Trout
The singular and the plural is trout, it doesn't change.
The word sisters is the plural form; the plural possessive is sisters'.
The plural form for the noun tree is trees.The plural possessive form is trees'.
The noun "branch" is a regular plural noun, a noun that forms its plural by adding "s" or "es". The plural form of branch is "branches".The plural possessive form is branches', a regular plural possessive.
pLURAL ; orbits Possessive plural ; Orbits' (NB note the position of the apostrophe).