How many phonemes in the words sister much fifteenand coming?

* Sister:

* /sɪs.tər/ - 5 phonemes

* Much:

* /mʌtʃ/ - 3 phonemes

* Fifteen:

* /fɪfˈtin/ - 4 phonemes

* Coming:

* /ˈkʌmɪŋ/ - 4 phonemes

Total: 5 + 3 + 4 + 4 = 16 phonemes