| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [verb] [v-ing] | 951 |
|
| 2 | [is] [vb pp] [v-ing] | 677 |
|
| 3 | [be] calculated [v-ing] | 86 |
|
| 4 | [is] calculated [verb] | 42 |
|
| 5 | [is] calculate [v-ing] | 20 |
|
