| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv prt] for [adv] a while | 12 |
|
| 2 | [adv prt] for quite a while | 12 |
|
| 3 | [adv prt] for [adv] a while | 12 |
|
| 4 | on for [adv] a while | 5 |
|
