# Cycle 174

## 174.1 Letter Combinations

#### Purpose and Procedure

This task introduces the “minor sound” of the letter combination *oo* as in *book*. This is called the “minor sound” because the *oo* letter combination usually makes the /ထ/ sound (as in *loose*), but it can also sometimes make the /ʊ/ sound, as it does in the words in this task.