| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [prep] a [noun sg] is | 67 |
|
| 2 | [prep] [subord] a [noun sg] is | 35 |
|
| 3 | [v-ing] [subord] a [noun sg] is | 33 |
|
| 4 | [v-ing] [prep] [subord] a [noun sg] | 13 |
|
