| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | are [adv] a | 1908 |
|
| 2 | are [adv] a | 1495 |
|
| 3 | be usually a | 413 |
|
| 4 | [be] usually a | 413 |
|
| 5 | are usually [art] | 88 |
|
| 6 | [am/are] usually a | 23 |
|
| 7 | are usually a | 21 |
|
