| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] be [v-ing] [adv] a | 92 |
|
| 2 | [verb] be [verb] [adv] a | 86 |
|
| 3 | [verb] be [v-ing] [adv] [art] | 53 |
|
| 4 | [verb] [be] [v-ing] [adv] a | 33 |
|
