| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be at the root | 82 |
|
| 2 | is at the root | 31 |
|
| 3 | be at the root | 13 |
|
| 4 | are at the root | 12 |
|
| 5 | was at the root | 12 |
|
| 6 | been at the root | 8 |
|
