| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] several year [pers pn] was | 5 |
|
| 2 | for several year [pers pn] [be] | 5 |
|
| 3 | [prep] several year [pers pn] be | 5 |
|
| 4 | [prep] several years [pers pn] [be] | 5 |
|
| 5 | [prep] several year [pers pn] [was/were] | 5 |
|
| 6 | [prep] several year [pers pn] [be] | 5 |
|
