| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] be duty | 9 |
|
| 2 | [pron] be duty | 6 |
|
| 3 | be [art] duty | 273 |
|
| 4 | be [art] duty | 273 |
|
| 5 | be [prep] duty | 267 |
|
| 6 | be [prep] duty | 267 |
|
| 7 | be [pos pn] duty | 211 |
|
| 8 | be [pron] duty | 211 |
|
| 9 | be on duty | 206 |
|
| 10 | be on duty | 206 |
|
| 11 | be the duty | 170 |
|
| 12 | be the duty | 170 |
|
| 13 | be a duty | 75 |
|
| 14 | be a duty | 75 |
|
| 15 | be my duty | 52 |
|
| 16 | be my duty | 52 |
|
| 17 | be off duty | 49 |
|
| 18 | be off duty | 49 |
|
| 19 | be his duty | 47 |
|
| 20 | be his duty | 47 |
|
| 21 | be our duty | 40 |
|
| 22 | be our duty | 40 |
|
| 23 | be their duty | 32 |
|
| 24 | be their duty | 32 |
|
| 25 | be no duty | 28 |
|
| 26 | be no duty | 28 |
|
| 27 | be your duty | 25 |
|
| 28 | be [adj] duty | 25 |
|
| 29 | be your duty | 25 |
|
| 30 | be [adj] duty | 17 |
|
