| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [be] [v-ing] [prep] a | 3646 |
|
| 2 | [be] [v-ing] [prep] a long | 55 |
|
| 3 | [pron] [be] [v-ing] a long | 44 |
|
| 4 | [pron] [be] [prep] a long | 18 |
|
| 5 | [pron] [v-ing] [prep] a long | 5 |
|
