| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] are usually a | 9 |
|
| 2 | [pron] are usually a | 9 |
|
| 3 | [noun pl] are usually a | 9 |
|
| 4 | [ex0] are usually a | 7 |
|
| 5 | there are usually a | 7 |
|
| 6 | there are usually a | 7 |
|
| 7 | are usually [prep] a | 10 |
|
| 8 | are usually [prep] a | 10 |
|
| 9 | are usually of a | 6 |
|
| 10 | are usually of a | 6 |
|
| 11 | are usually a [noun] | 10 |
|
| 12 | are usually a [noun sg] | 10 |
|
| 13 | are usually a [adj] | 9 |
|
| 14 | are usually a [adj] | 6 |
|
