| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] [been] [v-ing] [prep] [art] | 122 |
|
| 2 | should [vb infin] [been] [prep] [art] | 44 |
|
| 3 | should [vb infin] [been] [v-ing] [prep] | 33 |
|
| 4 | should [vb infin] [v-ing] [prep] [art] | 25 |
|
| 5 | should [vb infin] [been] [v-ing] [art] | 15 |
|
