| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [prep] existence [prep] | 57 |
|
| 2 | [vb base] been [prep] existence | 16 |
|
| 3 | [vb base] [prep] existence [prep] | 7 |
|
| 4 | [vb base] been [prep] [prep] | 7 |
|
