| Ground truth | Huh 你們 要 去 哦 你們 要 去 gym 啊 |
| Input | 哼 你們 要 去 哦 你們 要 去 體育館 啊 (Huh? Will you go? Will you go to the gym?) |
| Random | 哼 you guys 要 go 哦 你們 要 去 體育館 |
| Noun | 哼 你們 要 去 哦 你們 要 去 gym 啊 |
| Proposed | 哼 you guys 要 去 哦 你們 要 去 體育館 啊 |
| Proposed (+pos) | Huh 你們 要 去 哦 你們 要 去 gym 啊 |
In this case, the code-switching points appear at a noun (gym) and an interjection (huh). Also, the rule-based approach "noun" is accurate, but cannot find out all CSPs. The proposed method with POS tagging can find out all CSPs.