| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | if they [vb past] be [v-ing] [prep] | 6 |
|
| 2 | if they [vb past] be [v-ing] [prep] | 6 |
|
| 3 | if they [vb past] been [v-ing] [prep] | 6 |
|
| 4 | if they had be [v-ing] [prep] | 6 |
|
