| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [v-ing] [prep] [art] [adj] | 1134 |
|
| 2 | [is] [verb] [prep] [art] first | 189 |
|
| 3 | [be] [v-ing] [prep] [art] first | 113 |
|
