| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] had to be | 2546 |
|
| 2 | [noun pl] had to be | 869 |
|
| 3 | forces [verb] to be | 22 |
|
| 4 | forces [vb past] to be | 14 |
|
| 5 | forces have to be | 10 |
|
| 6 | force had to be | 10 |
|
| 7 | forces had [prep] be | 7 |
|
| 8 | forces had to be | 7 |
|
| 9 | forces had to [be] | 7 |
|
| 10 | forces had [prep] be | 7 |
|
