| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | that have been [verb] for [num] | 13 |
|
| 2 | that have been [vb pp] for [num] | 7 |
|
| 3 | that has been [verb] for [num] | 6 |
|
| 4 | that have been [v-ing] for [num] | 6 |
|
