| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [be] [v-ing] [prep] [adj] years | 48 |
|
| 2 | [vb past] [be] [v-ing] [prep] [num] years | 27 |
|
| 3 | [verb] [be] [v-ing] [prep] two years | 11 |
|
| 4 | [vb past] [be] [verb] [prep] two years | 8 |
|
| 5 | [vb past] [be] [v-ing] [prep] two [noun pl] | 7 |
|
| 6 | [vb past] [be] [v-ing] [prep] two [noun] | 7 |
|
| 7 | [vb past] [be] [v-ing] [prep] two year | 6 |
|
| 8 | [vb past] [be] [v-ing] [prep] two years | 6 |
|
| 9 | [vb past] [be] [v-ing] [prep] two years | 6 |
|
