consonant digraph

Rule Core

Consonant clusters are sequences of two or more consonants where each sound is preserved without inserting a vowel, such as bl, str, lt, ks. The logic is linear articulation: multiple consonant gestures executed in rapid succession.

Articulation Guide

Keep airflow continuous. Adjust tongue position quickly while maintaining a stable mouth shape. Stops release cleanly into fricatives; no schwa should be added.

Word Analysis

• alteration: the lt cluster requires a lateral /l/ followed immediately by a /t/ stop.
• auxiliary: the letter x represents /ks/; release /k/ directly into /s/.
• bookshelf: across the compound boundary, /k/ transitions swiftly into /ʃ/.

Pitfalls

Do not insert extra vowels or over-separate the consonants; spelling may look complex, but the sound stream remains tight.