| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adv] [v-ing] [prep] | 1792 |
|
| 2 | [adj] is [adv] [prep] | 468 |
|
| 3 | [adj] is [v-ing] [prep] | 405 |
|
| 4 | [adj] is [adv] [v-ing] | 257 |
|
| 5 | [adj] [adv] [v-ing] [prep] | 215 |
|
