| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] had be [v-ing] | 209 |
|
| 2 | had be [v-ing] at | 148 |
|
| 3 | [conj] be [v-ing] at | 112 |
|
| 4 | [conj] had be at | 10 |
|
