In old varieties of English, the word geese was pronounced [go:

In old varieties of English, the word geese was pronounced [go:si]. Describe how three phonological changes (umlaut, word-final vowel deletion, and the Great Vowel Shift) affected the pronunciation of this word resulting in the modern pronunciation, [gis]. You can assume that umlaut applied before word-final vowel deletion, which applied before the Great Vowel Shift.