| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] at the root of | 7 |
|
| 2 | have [been] at the root [prep] | 7 |
|
| 3 | have [been] at the root of | 7 |
|
| 4 | have [been] at the root [prep] | 7 |
|
