| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [prep] a | 31501 |
|
| 2 | [prep] a long | 4846 |
|
| 3 | [v-ing] a long | 334 |
|
| 4 | [v-ing] [prep] long | 96 |
|
