| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] [v-ing] [prep] [noun pl] | 389 |
|
| 2 | [v-ing] [prep] three [noun pl] | 211 |
|
| 3 | [been] [v-ing] [prep] three | 28 |
|
| 4 | [been] [prep] three [noun pl] | 14 |
|
