| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | or four years if [noun sg] is | 5 |
|
| 2 | or four years if [noun sg] be | 5 |
|
| 3 | or four years if [noun sg] [is] | 5 |
|
| 4 | or four years if [noun sg] [be] | 5 |
|
