| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | work at a | 131 |
|
| 2 | working at a | 55 |
|
| 3 | to work at a | 26 |
|
| 4 | worked at a | 20 |
|
| 5 | work at an | 17 |
|
| 6 | work at a | 15 |
|
| 7 | worked at a | 15 |
|
| 8 | works at a | 14 |
|
