| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [conj] [is] often [verb] | 74 |
|
| 2 | [noun] [conj] [is] often [vb pp] | 68 |
|
| 3 | [noun] [conj] [is] [adv] used | 67 |
|
| 4 | [noun] [conj] [is] [adv] used | 65 |
|
| 5 | [noun] [conj] [be] often used | 16 |
|
| 6 | [noun] [conj] [is] often used | 12 |
|
| 7 | [noun] [conj] [is] often use | 12 |
|
