| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [adv] [prep] a | 1254 |
|
| 2 | [is] [adv] [prep] a | 856 |
|
| 3 | [is] usually [prep] [art] | 76 |
|
| 4 | [be] usually [prep] a | 37 |
|
| 5 | [is] usually [prep] a | 21 |
|
