| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [be] [prep] [num] year [unc] | 6 |
|
| 2 | [modal v] [be] [prep] [num] year [unc] | 6 |
|
| 3 | [be] [verb] [prep] [num] year [unc] | 5 |
|
| 4 | [be] [prep] [num] year [unc] [noun sg] | 11 |
|
| 5 | [be] [prep] [num] year [unc] [noun] | 11 |
|
| 6 | [be] [prep] [num] year [unc] time | 9 |
|
| 7 | [be] [prep] [num] year [unc] time | 9 |
|
