Vowel Diphthongs 39 /oy/ sound Clayton Does The Unthinkable Be Safe in Public Spaces! Vowel Diphthongs 38 /ow/ sound Clayton Does The Unthinkable Other Vowel Sounds 38 /ow/ sound Dolch Sight Words Grade 3 (Level 2) Other Vowel Sounds 39 /oy/ sound Phonics - Consonants Level 1 Lily and Ben's Super Fun Book Club