| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [prep] three years ['s] | 24 |
|
| 2 | [is] [prep] three years ' | 24 |
|
| 3 | [is] [prep] three years ' | 24 |
|
| 4 | is [prep] three years [unc] | 24 |
|
| 5 | [is] of three years [unc] | 24 |
|
