A sound is added to a word.
- Voiceless stop insertion:
ø -> [p] / between [m] and [s],ø -> [k] / between [ŋ] and [s](e.g., strength/stɹɛŋθ/ -> [stɹɛ̃ŋkθ], hamster/hæmstɹ̩/ -> [hæ̃mpstɹ̩]) - Vowel insertion rule: “ø → [ə] / between two consonants of the same place and manner of articulation a the end of a word
(e.g., blast/blæstd/ → [blæstəd]`)