| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has to be taken | 112 |
|
| 2 | had to be taken | 112 |
|
| 3 | have to be taken | 83 |
|
| 4 | have to be taken | 73 |
|
| 5 | had to be taken | 6 |
|
