| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] had been walking [adv] | 10 |
|
| 2 | [pers pn] had been walking [adv] | 9 |
|
| 3 | had been walking [adv] [prep] | 10 |
|
| 4 | had been walking [adv] [prep] | 10 |
|
