| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [v-ing] [prep] be [adj] | 237 |
|
| 2 | is [v-ing] [prep] an [adj] | 77 |
|
| 3 | [v-ing] [prep] be an [adj] | 63 |
|
| 4 | is [v-ing] [prep] be an | 21 |
|
| 5 | is [prep] be an [adj] | 12 |
|
