| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] could be [vb pp] [v-ing] [adv prt] | 10 |
|
| 2 | could be [vb pp] [prep] [v-ing] [adv prt] | 14 |
|
| 3 | could be [vb pp] [prep] [v-ing] [adv prt] | 14 |
|
| 4 | could be [vb pp] by [v-ing] [adv prt] | 8 |
|
| 5 | could be [vb pp] by [v-ing] [adv prt] | 8 |
|
| 6 | could be [vb pp] [v-ing] [adv prt] [prep] | 7 |
|
| 7 | could be [vb pp] [v-ing] [adv prt] [prep] | 7 |
|
