| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [adv] [v-ing] [prep] [noun sg] | 831 |
|
| 2 | be [adv] [v-ing] forward [prep] | 170 |
|
| 3 | be [v-ing] forward [prep] [noun sg] | 18 |
|
| 4 | [adv] [v-ing] forward [prep] [noun sg] | 15 |
|
