Here are a few possibilities depending on what you mean by "special":
* Consonants with unique pronunciation:
* "Th" sounds (voiced and unvoiced): These are often considered special due to their unique pronunciation, involving the tongue touching the back of the teeth.
* "Ng" (as in "sing"): This is a special sound formed by blocking the airflow in the back of the mouth and using the nasal cavity to release it.
* Consonants that are hard to pronounce for non-native speakers:
* "R": This sound is particularly difficult for speakers of some languages.
* "L": Similar to "R," this sound can be challenging for learners.
* Consonants that are unique to certain languages:
* "Clicks": Found in languages like Xhosa and Zulu, these consonants are produced by clicking the tongue against the roof of the mouth.
* "Glottal stops": These are produced by momentarily blocking airflow in the throat, often used in languages like Arabic and Hebrew.
To understand what you're looking for, please clarify:
* What makes a consonant "special" in your context?
* Which language are you interested in?
Once I know your criteria, I can help you identify the "special" consonants you're looking for!