i.e. Serbian, Croatian, Montenegrin and Bosnian, the use of is limited to friends and family, and used among children. In any formal use, , the second-person plural, is used only; can be used among peers in a workplace but is rare in official documents. With the polite , masculine plural (in participles and adjectives) is used regardless of the sex of the person addressed. Bulgarian Bulgarian distinguishes between familiar () and respectful (). is always singular and implies familiarity. , the plural of , also functions as the formal singular. In addressing more than one person, the plural is always used. For example, " means "You two leave, please!"). Here, although and both means you, can not be used. When addressing a single person, if the people talking are acquainted then singular is used, otherwise plural should be used. Sometimes people start a new acquaintance straightforwardly with singular , but generally this is considered offensive, rude, or simply impolite. Children are taught to always use between themselves, but for addressing more than one child or an unknown adult. The grammatically correct spelling of the singular word is always with a capital letter, whether being the first word in a sentence or not. For example, the sentence "But you are wrong!", if spelled (in Bulgarian) (the word with capital ), it would convey that the speaker is addressing an individual person with a plural, because he/she wants to express a polite, official manner; if spelt (the second possible Bulgarian translation of "But you are wrong!"), it would then mean that someone is talking to several persons. Generally, is used among friends and relatives. When talking to each other, young people often start with the formal but quickly transition to in an informal situation. Unless there is a substantial difference in social situation (e.g. a teacher and a student), the choice of the form is symmetric: if A. uses to address B., then B. also uses to address A. While people may transition quickly from to , such transition presumes mutual agreement. There is a recent trend not to use the formal at all, but this can lead to awkward situations. Macedonian Macedonian distinguishes between familiar () and respectful ()—which is also the plural of both forms, used to address a pair or group. (Respectful may be capitalized, while plural is not.) Generally, is used among friends and relatives, but the usage