Scotland, parts of Ireland
Originally, the Middle English short vowels i, e, u centred to schwa
before non-prevocalic r:
so birth and berth, tern and turn fell together.
Later the centred vowel was lengthened to (Pre-R Lengthening).
Some dalects retain all these distinctions. The situation given above is the commonest remaining distinction, In Scotland.
In English dialects, hurry
is still distinct from furry
In many American accents they have merged to , . This is known as the 2nd Nurse Merger.
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