| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [v-ing] [prep] a | 3202 |
|
| 2 | [am/are] [v-ing] [prep] a | 1795 |
|
| 3 | [noun sg] [am/are] [v-ing] [prep] | 490 |
|
| 4 | [noun sg] [am/are] [v-ing] a | 185 |
|
| 5 | [noun sg] [am/are] [prep] a | 124 |
|
