| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] [prep] existence for [det] | 9 |
|
| 2 | [been] [prep] existence for [det] | 9 |
|
| 3 | been [prep] existence for [det] | 9 |
|
| 4 | [been] in existence for [det] | 9 |
|
