| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [adv prt] for a while | 105 |
|
| 2 | been [verb] [adv prt] for a | 56 |
|
| 3 | been [adv prt] for a while | 21 |
|
| 4 | been [verb] for a while | 13 |
|
