| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when used | 226 |
|
| 2 | as used | 169 |
|
| 3 | if used | 132 |
|
| 4 | unless used | 8 |
|
| 5 | although used | 6 |
|
| 6 | whether used | 5 |
|
| 7 | where used | 5 |
|
