| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] of four years [unc] [noun sg] | 17 |
|
| 2 | be of four years [unc] [noun sg] | 17 |
|
| 3 | is of four years [unc] [noun sg] | 14 |
|
| 4 | [is] of four years [unc] [noun sg] | 14 |
|
