1. Within Word Pattern: Sort 31 (Diphthongs 0, OI, OY) join joy joint broil soil cloak spoilcoin foil moist loan bowl whole pointboy noise toy oil soy stole choke coil choice voice

2. oi is usually the spelling for the sound of oi in the middle of words such as point. oy is usually the spelling of oi at the end of words like boy. The sound of long o can also be spelled with ow.

3. Within Word Pattern: Sort 31 (Diphthongs 0, OI, OY) join joyjoy joint broil soil cloak spoilcoin foil moist loan bowl whole pointboyboy noise toytoy oil soysoy stole choke coil choice voice