| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] [pron] [prep] an [adj] | 9 |
|
| 2 | is [verb] [pers pn] [prep] an [adj] | 8 |
|
| 3 | is [v-ing] [pron] [prep] an [adj] | 5 |
|
