| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] [been] [vb pp] a | 397 |
|
| 2 | [vb -s] [been] [vb pp] have | 75 |
|
| 3 | [vb -s] [vb pp] have a | 32 |
|
| 4 | [been] [vb pp] have a | 28 |
|
| 5 | [vb -s] [been] have a | 19 |
|
