| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [det] research | 12 |
|
| 2 | [vb -s] been [det] research | 12 |
|
| 3 | [verb] been [det] research | 12 |
|
| 4 | has been [det] research | 12 |
|
| 5 | been [adv] [det] research | 10 |
|
| 6 | been [adv] [det] research | 10 |
|
| 7 | been [verb] [det] research | 6 |
|
| 8 | been doing [det] research | 5 |
|
| 9 | been do [det] research | 5 |
|
| 10 | been [v-ing] [det] research | 5 |
|
| 11 | been [det] [adj] research | 7 |
|
| 12 | been [det] [adj] research | 7 |
|
| 13 | been [det] research [prep] | 9 |
|
| 14 | been [det] research [prep] | 9 |
|
| 15 | been [det] research on | 6 |
|
| 16 | been [det] research on | 6 |
|
