| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | approach to [noun] have been | 8 |
|
| 2 | approach to [noun sg] [verb] been | 7 |
|
| 3 | approach to [noun] [vb -s] been | 7 |
|
| 4 | approach to [noun] has been | 7 |
|
