| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a year of [noun sg] | 34 |
|
| 2 | [prep] a few year of | 32 |
|
| 3 | [prep] a few year [noun sg] | 23 |
|
| 4 | a few year of [noun sg] | 15 |
|
