| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should [prep] [been] | 45 |
|
| 2 | should [prep] been | 45 |
|
| 3 | should of [been] | 45 |
|
| 4 | should of [been] | 45 |
|
| 5 | should [prep] [been] | 45 |
|
