| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] three years [pers pn] [vb past] | 19 |
|
| 2 | [prep] three years [pers pn] had | 8 |
|
| 3 | for three years [pers pn] [vb past] | 8 |
|
| 4 | [prep] three years he [vb past] | 8 |
|
