| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [prep] [adj] years [unc] | 46 |
|
| 2 | [be] [prep] three years [unc] | 25 |
|
| 3 | [is] [prep] three [noun] [unc] | 24 |
|
| 4 | [is] [prep] three [noun pl] [unc] | 24 |
|
| 5 | [is] [prep] three years [unc] | 24 |
|
| 6 | [is] [prep] three year [unc] | 24 |
|
