| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] shown [prep] be [adv] [adj] | 34 |
|
| 2 | [been] shown [prep] be [adv] [adj] | 32 |
|
| 3 | [been] [vb pp] [prep] be [adv] effective | 12 |
|
| 4 | [been] [verb] [prep] be [adv] effective | 12 |
|
| 5 | [be] shown [prep] be [adv] effective | 7 |
|
| 6 | [been] show [prep] be [adv] effective | 7 |
|
| 7 | [been] shown [prep] [be] [adv] effective | 7 |
|
| 8 | [been] shown [prep] be [adv] effective | 7 |
|
