| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had be [verb] [prep] | 17603 |
|
| 2 | had be [v-ing] [prep] | 1920 |
|
| 3 | [verb] be working [prep] | 493 |
|
| 4 | have be working [prep] | 485 |
|
| 5 | [vb past] be working [prep] | 180 |
|
| 6 | had be work [prep] | 163 |
|
| 7 | had [be] working [prep] | 156 |
|
