| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [vb pp] to be | 747 |
|
| 2 | been shown to be | 222 |
|
| 3 | been show to be | 222 |
|
| 4 | been find to be | 165 |
|
| 5 | been found to be | 165 |
|
| 6 | been hold to be | 30 |
|
| 7 | been held to be | 30 |
|
| 8 | been reported to be | 26 |
|
| 9 | been report to be | 26 |
|
| 10 | been considered to be | 21 |
|
| 11 | been consider to be | 21 |
|
| 12 | been prove to be | 20 |
|
| 13 | been designed to be | 17 |
|
| 14 | been design to be | 17 |
|
| 15 | been think to be | 16 |
|
| 16 | been thought to be | 16 |
|
| 17 | been proved to be | 15 |
|
| 18 | been expect to be | 14 |
|
| 19 | been assumed to be | 13 |
|
| 20 | been expected to be | 13 |
|
| 21 | been said to be | 13 |
|
| 22 | been assume to be | 13 |
|
| 23 | been say to be | 13 |
|
| 24 | been known to be | 12 |
|
| 25 | been know to be | 12 |
|
| 26 | been [v-ing] to be | 10 |
|
| 27 | been seen to be | 10 |
|
| 28 | been see to be | 10 |
|
| 29 | been estimate to be | 6 |
|
| 30 | been estimated to be | 6 |
|
