| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] for [adj] years | 260 |
|
| 2 | [v-ing] for [num] years | 206 |
|
| 3 | [verb] for 20 years | 42 |
|
| 4 | [v-ing] for 20 [noun] | 15 |
|
| 5 | [v-ing] for 20 [noun pl] | 14 |
|
| 6 | [v-ing] [prep] 20 years | 9 |
|
| 7 | [v-ing] [prep] 20 years | 9 |
|
| 8 | [v-ing] for 20 years | 8 |
|
| 9 | [v-ing] for 20 years | 8 |
|
| 10 | [v-ing] for 20 year | 8 |
|
