| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] for [adj] year | 291 |
|
| 2 | [v-ing] for [num] year | 215 |
|
| 3 | [verb] for twenty year | 45 |
|
| 4 | [v-ing] for twenty [noun] | 20 |
|
| 5 | [v-ing] [prep] twenty year | 13 |
|
| 6 | [v-ing] [prep] twenty year | 13 |
|
| 7 | [v-ing] for twenty year | 12 |
|
| 8 | [v-ing] for twenty year | 12 |
|
