| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] which have been [verb] for | 64 |
|
| 2 | [noun sg] which have been [vb pp] for | 50 |
|
| 3 | [noun sg] which has been [verb] for | 34 |
|
| 4 | [noun sg] which had been [verb] for | 26 |
|
| 5 | [noun sg] which have been [v-ing] for | 14 |
|
| 6 | [noun sg] which have been used for | 8 |
|
| 7 | [noun sg] which have been use for | 8 |
|
