| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been a [noun] for | 281 |
|
| 2 | [verb] been a [noun sg] for | 279 |
|
| 3 | [verb] been a tendency [prep] | 21 |
|
| 4 | [verb] been [art] tendency for | 15 |
|
| 5 | [verb] been a tendency for | 14 |
|
| 6 | [verb] [be] a tendency for | 14 |
|
| 7 | [verb] [been] a tendency for | 14 |
|
| 8 | [verb] be a tendency for | 14 |
|
