| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why it [is] [verb] | 70 |
|
| 2 | why it [is] [vb pp] | 40 |
|
| 3 | why it is [verb] | 36 |
|
| 4 | why it 's [verb] | 34 |
|
| 5 | why it [is] [v-ing] | 30 |
|
| 6 | why it [is] call | 21 |
|
| 7 | why it [is] called | 21 |
|
| 8 | why it [is] happening | 8 |
|
| 9 | why it [is] happen | 8 |
|
| 10 | why it [is] take | 6 |
|
| 11 | why it [is] taking | 5 |
|
