Complex sentence: In the English dialects exhibiting pre-glottalization, the consonants in question are usually glottalized in the coda position: "what", "fiction", "milkman", "opera".
Split into simpler sentences: In the English dialects exhibiting pre-glottalization, the consonants in question are usually glottalized in the coda position. E.g. "what", "fiction", "milkman", "opera".