| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [num] have become | 55 |
|
| 2 | [num] had become | 33 |
|
| 3 | [num] has become | 12 |
|
| 4 | [num] have become | 8 |
|
| 5 | two have become | 5 |
|
