| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] years ' [noun sg] [pron] be | 6 |
|
| 2 | [num] years ' [noun sg] [pron] be | 5 |
|
| 3 | years ' [noun sg] [pron] [vb mod] be | 7 |
|
| 4 | years ' [noun sg] [pron] [modal v] be | 7 |
|
