| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] trying for [noun pl] | 15 |
|
| 2 | have [been] for [num] [noun pl] | 15 |
|
| 3 | [been] trying for [num] [noun pl] | 6 |
|
| 4 | have [been] trying for [num] | 6 |
|
