| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [prep] [num] years ['s] | 59 |
|
| 2 | be [prep] [num] years ' | 59 |
|
| 3 | be [prep] [num] years ' | 59 |
|
| 4 | be of [num] years [unc] | 48 |
|
| 5 | is [prep] [num] years [unc] | 46 |
|
| 6 | be [prep] three years [unc] | 25 |
|
| 7 | be [prep] four years [unc] | 18 |
|
| 8 | be [prep] [num] years [unc] | 11 |
|
| 9 | be in [num] years [unc] | 9 |
|
| 10 | be [prep] two years [unc] | 8 |
|
| 11 | be [prep] five years [unc] | 5 |
|
