| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] [is] [vb pp] [adv prt] [prep] | 121 |
|
| 2 | [det] [is] often [vb pp] [prep] | 45 |
|
| 3 | [is] often [vb pp] [adv prt] [prep] | 36 |
|
| 4 | [det] [is] often [vb pp] [adv prt] | 5 |
|
