| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a number of [noun] | 9066 |
|
| 2 | [prep] a number of | 5608 |
|
| 3 | [prep] number of [noun] | 185 |
|
| 4 | [prep] a number [noun] | 33 |
|
