| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [vb past] [be] [v-ing] [prep] | 133 |
|
| 2 | [vb past] [be] [v-ing] [prep] [num] | 98 |
|
| 3 | they [be] [v-ing] [prep] [num] | 65 |
|
| 4 | they [vb past] [be] [prep] [num] | 17 |
|
