| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been use [prep] a | 133 |
|
| 2 | [adv] been use [prep] a | 37 |
|
| 3 | [adv] have been [prep] a | 33 |
|
| 4 | [adv] have been use [prep] | 28 |
|
