| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [v-ing] a | 13940 |
|
| 2 | [be] a long | 1960 |
|
| 3 | [v-ing] a long | 313 |
|
| 4 | [be] [v-ing] long | 34 |
|
