| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] an old | 166 |
|
| 2 | it be an old | 166 |
|
| 3 | it [is] an old | 100 |
|
| 4 | it 's an old | 76 |
|
| 5 | it was an old | 65 |
|
| 6 | it [was/were] an old | 65 |
|
| 7 | it is an old | 24 |
|
| 8 | it [verb] an old | 12 |
|
| 9 | it [prep] an old | 9 |
|
| 10 | it [prep] an old | 9 |
|
| 11 | it [vb past] an old | 8 |
|
| 12 | it an old [noun] | 6 |
|
