| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they have [been] [vb pp] | 2385 |
|
| 2 | they have [vb pp] a | 1541 |
|
| 3 | have [been] [vb pp] a | 1070 |
|
| 4 | they have [been] a | 39 |
|
