| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [been] work at the [noun sg] | 8 |
|
| 2 | have [been] work at the [noun sg] | 8 |
|
| 3 | [verb] been work at the [noun sg] | 8 |
|
| 4 | [verb] [been] working at the [noun sg] | 8 |
|
