This is because the underlying knowledge you have of the English language tells you that two consonants such as ‘fw’ cannot appear next to each other at the end of a word. Phonemes are the smallest ...

V(C)DlV --> V(C)D $ lT. 'D' = an alveolar stop, (C) = any immediately preceding consonant, 'l' = /l/. If an alveolar stop and the phoneme /l/ occur between vowels, the alveolar stop goes with the ...