| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] [prep] [num] years time | 5 |
|
| 2 | [be] [vb pp] [prep] [num] years time | 5 |
|
| 3 | [vb pp] [prep] [num] years ' time | 8 |
|
| 4 | [vb pp] [prep] [num] years ['s] time | 8 |
|
| 5 | [vb pp] [prep] [num] years [unc] time | 8 |
|
| 6 | [vb pp] [prep] [num] years ' time | 8 |
|
