| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [vb -s] [prep] about | 16 |
|
| 2 | which [vb -s] [prep] about | 16 |
|
| 3 | which [vb -s] for about | 10 |
|
| 4 | which accounts [prep] about | 8 |
|
