elliptical sentences where its complement is omitted: Who's ready? I am! (not *I'm!). Some contractions lead to homophony, which sometimes causes errors in writing. Confusion is particularly common between it's (for "it is/has") and the pronoun possessive its, and sometimes similarly between you're and your. For the confusion of have or -'ve with of (as in "" for would have), see Weak and strong forms in English. Contractions of the type described here should not be confused with abbreviations, such as Ltd. for "Limited (company)". Contraction-like abbreviations, such as int'l for international, are considered abbreviations as their contracted forms cannot be pronounced in speech. Abbreviations also include acronyms and initialisms. Negative form of am Although there is no contraction for am not in standard English, there are certain colloquial or dialectal forms that may fill this role. These may be used in declarative sentences, whose standard form contains I am not, and in questions, with standard form am I not? In the declarative case the standard contraction I'm not is available, but this does not apply in questions, where speakers may feel the need for a negative contraction to form the analog of isn't it, aren't they, etc. (see below). The following are sometimes used in place of am not in the cases described above: The contraction ain't may stand for am not, among its other uses. For details see the next section, and the separate article on ain't. The word amnae for "am not" exists in Scots, and has been borrowed into Scottish English by many speakers. The contraction amn't (formed in the regular manner of the other negative contractions, as described above) is a standard contraction of am not in some varieties, mainly Hiberno-English (Irish English) and Scottish English. In Hiberno-English the question form (amn't I?) is used more frequently than the declarative I amn't. (The standard I'm not is available as an alternative to I amn't in both Scottish English and Hiberno-English.) An example appears in Oliver St. John Gogarty's impious poem The Ballad of Japing Jesus: "If anyone thinks that I amn't divine, / He gets no free drinks when I'm making the wine". These lines are quoted in James Joyce's Ulysses, which also contains other examples: "Amn't I with you? Amn't I your girl?" (spoken by Cissy Caffrey to Leopold Bloom in Chapter 15). The contraction aren't, which in standard English represents are not, is