| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] was [v-ing] at [art] back | 9 |
|
| 2 | [pers pn] was [v-ing] at [art] back | 5 |
|
| 3 | was [v-ing] at [art] back [prep] | 13 |
|
| 4 | was [v-ing] at [art] back [prep] | 13 |
|
| 5 | was [v-ing] at [art] back of | 12 |
|
| 6 | was [v-ing] at [art] back of | 12 |
|
