| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [be] taken [prep] | 180 |
|
| 2 | which [be] taken [prep] | 74 |
|
| 3 | which must [be] [prep] | 23 |
|
| 4 | which must [be] taken | 14 |
|
