| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | if you must [verb] | 101 |
|
| 2 | if you must [vb infin] | 101 |
|
| 3 | [conj] you must know | 78 |
|
| 4 | if you [modal v] know | 53 |
|
| 5 | if [pron] must know | 52 |
|
| 6 | if [pers pn] must know | 52 |
|
| 7 | if you must know | 51 |
|
| 8 | if you must know | 51 |
|
