| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [adv] been [prep] existence for | 8 |
|
| 2 | have [adv] been [prep] existence for | 8 |
|
| 3 | has [adv] been [prep] existence for | 6 |
|
| 4 | [vb -s] [adv] been [prep] existence for | 6 |
|
