PPA - Pre-K - Lesson 16 - ck-/k/ Buck the duck
PPA - Pre-K - Lesson 17 - /e/ Edwin the elf
PPA - Pre-K - Lesson 18 - /u/ Ugbie the bug
PPA - Pre-K - Lesson 19 - /r/ Rex the rat
PPA - Pre-K - Lesson 20 - ck-/k/, /e/, /u/, /r/
