| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be at the root | 83 |
|
| 2 | [be] at the root | 82 |
|
| 3 | [is] at the root | 32 |
|
| 4 | is at the root | 31 |
|
| 5 | [was/were] at the root | 15 |
|
| 6 | be at the root | 13 |
|
| 7 | [be] at the root | 13 |
|
| 8 | are at the root | 12 |
|
| 9 | [am/are] at the root | 12 |
|
| 10 | was at the root | 12 |
|
| 11 | [been] at the root | 8 |
|
| 12 | been at the root | 8 |
|
