| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun sg] [prep] [v-ing] | 4102 |
|
| 2 | [prep] a long [noun sg] [prep] | 851 |
|
| 3 | a long [noun sg] [prep] [v-ing] | 266 |
|
| 4 | [prep] a long [noun sg] [v-ing] | 48 |
|
