| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] have been use [prep] a | 8 |
|
| 2 | [adv] have been used [prep] a | 8 |
|
| 3 | [adv] have been use [prep] a | 7 |
|
| 4 | [adv] have been use as a | 5 |
|
| 5 | [adv] have been use as a | 5 |
|
