| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adv] [vb pp] [adv prt] [prep] [v-ing] | 12 |
|
| 2 | is [adv] [vb pp] [adv] by [v-ing] | 9 |
|
| 3 | is [adv] [vb pp] [adv] [prep] [v-ing] | 8 |
|
