| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [adj] to | 1105 |
|
| 2 | have been [adj] to | 1069 |
|
| 3 | have been useful [prep] | 20 |
|
| 4 | have be useful to | 5 |
|
| 5 | have [been] useful to | 5 |
|
| 6 | have [be] useful to | 5 |
|
| 7 | [verb] been useful to | 5 |
|
| 8 | have been useful to | 5 |
|
