| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [prep] six months | 17 |
|
| 2 | it [prep] six months | 17 |
|
| 3 | it [be] six months | 13 |
|
| 4 | it be six months | 13 |
|
| 5 | it for six months | 10 |
|
| 6 | it for six months | 10 |
|
| 7 | it [verb] six months | 7 |
|
| 8 | it was six months | 7 |
|
| 9 | it [was/were] six months | 7 |
|
| 10 | it [vb past] six months | 7 |
|
| 11 | it took six months | 6 |
|
| 12 | it take six months | 6 |
|
| 13 | it 's six months | 5 |
|
| 14 | it [is] six months | 5 |
|
