The cot–caught merger or LOT–THOUGHT merger, formally known in linguistics as the low back merger, is a sound change present in some dialects of English where speakers do not distinguish the vowel phonemes in "cot" and "caught". "Cot" and "caught" (along with "bot" and "bought", "pond" and "pawned", etc.) is an example of a minimal pair that is lost as a result of this sound change. The phonemes involved in the cot–caught merger, the low back vowels, are typically represented in the International Phonetic Alphabet as /ɒ/ and /ɔ/, respectively (in the U.S., co-occurring with the father–bother merger, as /ɑ/ and /ɔ/). The merger is typical of most Canadian and Scottish English dialects as well as some Irish and U.S. English dialects.