| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] itself [prep] | 3441 |
|
| 2 | [to-vb] itself [prep] | 560 |
|
| 3 | to maintain [pron] [prep] | 43 |
|
| 4 | to maintain [pn reflx] [prep] | 16 |
|
| 5 | maintain itself [prep] | 15 |
|
| 6 | to maintain itself [prep] | 7 |
|
| 7 | to maintain itself [prep] | 7 |
|
