| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [prep] [v-ing] [conj] [art] | 100 |
|
| 2 | [prep] [v-ing] [conj] [conj] [art] | 50 |
|
| 3 | is [prep] [v-ing] [conj] [conj] | 26 |
|
| 4 | is [v-ing] [conj] [conj] [art] | 6 |
|
