| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [be] [v-ing] [prep] years | 19 |
|
| 2 | [be] [v-ing] [prep] many years | 14 |
|
| 3 | [vb past] [be] [v-ing] [prep] many | 10 |
|
| 4 | [vb past] [be] [prep] many years | 7 |
|
