| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [adv] [adv] a | 2818 |
|
| 2 | [is] [adv] [adv] a | 2578 |
|
| 3 | [is] [adv] usually [art] | 43 |
|
| 4 | [be] [adv] usually a | 38 |
|
| 5 | [is] [adv] usually a | 32 |
|
