| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] chance [prep] [v-ing] | 261 |
|
| 2 | [is] a [adj] chance [prep] | 40 |
|
| 3 | [is] [adj] chance [prep] [v-ing] | 28 |
|
| 4 | [is] a chance [prep] [v-ing] | 5 |
|
