| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [verb] be [num] [noun] [adv] | 19 |
|
| 2 | [modal v] [verb] be [adj] year [adv] | 12 |
|
| 3 | [modal v] [verb] [be] [num] year [adv] | 7 |
|
