| 1 | It has two parts: vowels and consonants . | |
| 2 | Words that begin with a consonant sound were easier to learn. | |
| 3 | All voiced consonants are produced with vocal-cord vibration. | |
| 4 | The forty-fourth and last consonant of the Thai alphabet; | |
| 5 | Sound contrast pairs, including vowels and consonants, which learners often confuse. |