| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [verb] [adv] for [det] purpose | 7 |
|
| 2 | been [verb] [adv] for [adj] purpose | 7 |
|
| 3 | been [vb pp] [adv] for [adj] purpose | 7 |
|
| 4 | been [verb] [adv] for this purpose | 5 |
|
| 5 | been [verb] [adv] for this purpose | 5 |
|
