| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [verb] on a [noun sg] | 47 |
|
| 2 | has [been] [verb] on a [noun sg] | 47 |
|
| 3 | has [been] [vb pp] on a [noun sg] | 43 |
|
| 4 | has [been] [verb] on a number | 9 |
|
