Beginner Level Advanced Level
INTERMEDIATE LEVEL
Content
字母 → ☊ zi4mu3 
letter (of the alphabet); CL:个/个ge4 ☊ 
Các chữ cái ☊
→ → →
like: Các chữ cái → →
She kept all the letters in a box. ☊ box ☊
confusion between letters of the alphabet like 'o' or 'a' ☊ confusion ☊
Rearrange the letters to form a new word. ☊ form ☊
hate mail (= letters containing cruel comments) ☊ hate ☊
hate mail (= letters containing insults and threats) ☊ mail ☊