| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | explained by the [noun sg] [prep] | 72 |
|
| 2 | be explained by the [noun sg] | 63 |
|
| 3 | be explained by [noun sg] [prep] | 20 |
|
| 4 | be by the [noun sg] [prep] | 13 |
|
