| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] on [noun] | 883 |
|
| 2 | [subord] on [noun sg] | 557 |
|
| 3 | [subord] [prep] duty | 33 |
|
| 4 | [conj] on duty | 21 |
|
| 5 | [subord] on duty | 19 |
|
