| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adj] years of [v-ing] [pers pn] | 7 |
|
| 2 | after [adj] years of [v-ing] [pers pn] | 7 |
|
| 3 | [prep] [num] years of [v-ing] [pers pn] | 7 |
|
