| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] happened [prep] the [num ord] | 20 |
|
| 2 | [vb -s] happened [prep] the last | 16 |
|
| 3 | has happened [prep] the [num ord] | 15 |
|
| 4 | [vb -s] happened in the [num ord] | 13 |
|
| 5 | [vb -s] happened in the [num ord] | 13 |
|
| 6 | 's happened [prep] the [num ord] | 5 |
|
