| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] [prep] a [det] days | 8 |
|
| 2 | [be] [v-ing] [prep] a [det] days | 8 |
|
| 3 | [v-ing] [adv] [prep] a [det] days | 5 |
|
