The word "sandin" is spelled with the letter combination "i-n" after the "d" sound. In phonetic transcription, this is represented as /sændɪn/. The first syllable starts with the "s" sound, followed by the short "a" sound, then the "n" sound. The second syllable starts with the "d" sound, followed by the short "i" sound, and ends with the "n" sound. In English, this type of spelling pattern is very common, with many words ending in "-in" or "-en".