| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun sg] | 407839 |
|
| 2 | [v-ing] a [noun sg] | 41586 |
|
| 3 | [v-ing] [prep] [noun sg] | 34740 |
|
| 4 | [v-ing] [prep] a | 27354 |
|
