| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [prep] [num] years ['s] | 10 |
|
| 2 | be [prep] [num] year ' | 10 |
|
| 3 | be in [num] year ['s] | 9 |
|
| 4 | be [prep] five year ['s] | 5 |
|
