| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] be keep busy | 9 |
|
| 2 | [noun pl] [be] kept busy | 8 |
|
| 3 | [noun pl] [was/were] keep busy | 5 |
|
| 4 | [noun pl] were keep busy | 5 |
|
