| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [v-ing] [prep] a | 1965 |
|
| 2 | [adv] [prep] a long | 489 |
|
| 3 | [v-ing] [prep] a long | 134 |
|
| 4 | [adv] [v-ing] a long | 15 |
|
