| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] [prep] serious [noun sg] | 9 |
|
| 2 | [verb] [been] [prep] serious [noun sg] | 9 |
|
| 3 | [been] [prep] serious [noun sg] [prep] | 5 |
|
| 4 | [been] [prep] serious [noun sg] [prep] | 5 |
|
