| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | of several years [unc] [noun sg] | 7 |
|
| 2 | of several years ['s] [noun sg] | 7 |
|
| 3 | of several years ' [noun sg] | 7 |
|
| 4 | of several years ' [noun sg] | 7 |
|
| 5 | of several years [unc] [noun sg] | 7 |
|
