| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when it was [verb] | 762 |
|
| 2 | when it was [verb] | 762 |
|
| 3 | when it was [vb pp] | 714 |
|
| 4 | when it was [v-ing] | 48 |
|
| 5 | when it was discover | 27 |
|
| 6 | when it was discovered | 27 |
|
| 7 | when it was reveal | 25 |
|
| 8 | when it was revealed | 25 |
|
| 9 | when it was build | 22 |
|
| 10 | when it was announced | 21 |
|
| 11 | when it was built | 21 |
|
| 12 | when it was announce | 21 |
|
| 13 | when it was done | 17 |
|
| 14 | when it was do | 17 |
|
| 15 | when it was make | 17 |
|
| 16 | when it was made | 16 |
|
| 17 | when it was finished | 16 |
|
| 18 | when it was found | 16 |
|
| 19 | when it was finish | 16 |
|
| 20 | when it was find | 16 |
|
| 21 | when it was published | 15 |
|
| 22 | when it was publish | 15 |
|
| 23 | when it was show | 13 |
|
| 24 | when it was shown | 13 |
|
| 25 | when it was introduced | 12 |
|
| 26 | when it was introduce | 12 |
|
| 27 | when it was suggest | 11 |
|
| 28 | when it was suggested | 11 |
|
| 29 | when it was put | 10 |
|
| 30 | when it was decided | 10 |
|
