| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a number of [noun pl] at | 44 |
|
| 2 | a number [prep] [noun pl] at | 44 |
|
| 3 | a number [prep] [noun pl] at | 44 |
|
| 4 | a number of [noun pl] at | 44 |
|
| 5 | a number [prep] [noun pl] at | 44 |
|
