Reminder: because we are practicing pronunciation of syllables, and not words, please pronounce 'as' and is' with a soft, voiceless /s/ sound, unlike the word 'is,' which is pronounced with a /z/ sound. Help learners slowly and clearly enunciate the more difficult sounds of 'r,' 'v,' 'x,' and 'z.'  You may need to exaggerate the sounds, and open your mouth more for the learner to clearly see mouth, tongue, and teeth positions. For 2nd language learners, avoid adding unnecessary syllables after the letter 'x,' e.g. For the syllable 'ax,' avoid saying /ah-kuh-sss/.