selves
The plural way to spell studio is studios.
Lis pendens is considered a singular and plural version of the word. You would NOT spell it "lis pendenses" as the plural. You simply use the same word as singular and plural.
The plural of 'body' is 'bodies'.
There is a plural noun "flagellants" (self-whippers). The word sought may instead be "flatulence" (releasing gas anally).
The spelling "quizzers" is a plural form that would refer to persons who quiz, or test.The plural of the word quiz is quizzes.
The word forms the normal plural nods.
The plural of the word bronco is broncos.
Margin is the correct spelling of this word. The plural form would be spelled as margins.
schools
The plural of the word "system" is "systems"
The Latin plural is pupae. The English plural may be pupas.
The correct word is themselves.Although the word "them" has regained popular use as a singular third-person pronoun of indefinite gender(him/her), the self version is considered incorrect and should be used for the plural "them" only. The word "they" whether considered singular or plural, always uses the plural form of a verb.