| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be a problem | 148 |
|
| 2 | it [be] a problem | 148 |
|
| 3 | it [is] a problem | 123 |
|
| 4 | it 's a problem | 68 |
|
| 5 | it is a problem | 55 |
|
| 6 | it [was/were] a problem | 22 |
|
| 7 | it was a problem | 21 |
|
| 8 | it [verb] a problem | 17 |
|
| 9 | it [vb -s] a problem | 12 |
|
| 10 | it [prep] a problem | 10 |
|
| 11 | it [prep] a problem | 10 |
|
| 12 | it as a problem | 8 |
|
| 13 | it as a problem | 8 |
|
| 14 | it become a problem | 5 |
|
| 15 | [verb] it a problem | 10 |
|
| 16 | be it a problem | 9 |
|
| 17 | [be] it a problem | 9 |
|
| 18 | [is] it a problem | 9 |
|
| 19 | is it a problem | 9 |
|
| 20 | [vb infin] it a problem | 5 |
|
| 21 | it a problem [prep] | 7 |
|
| 22 | it a problem [prep] | 7 |
|
