| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] working [modal v] be | 8 |
|
| 2 | [prep] working [modal v] be | 8 |
|
| 3 | [prep] working [vb mod] be | 8 |
|
| 4 | of working [modal v] be | 7 |
|
| 5 | of working [modal v] be | 7 |
|
