| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] have [been] a [noun sg] | 542 |
|
| 2 | [noun sg] have a vital [noun sg] | 15 |
|
| 3 | have [been] a vital [noun sg] | 12 |
|
| 4 | [noun sg] have [been] a vital | 6 |
|
