| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] should [vb infin] [been] [art] [adj] | 18 |
|
| 2 | [Wh det] should [vb infin] [been] [art] [adj] | 18 |
|
| 3 | [Wh det] should [vb infin] [been] a [adj] | 18 |
|
| 4 | [Wh det] should [vb infin] [been] a [adj] | 17 |
|
