| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back [adv prt] [art] | 171 |
|
| 2 | back [adv prt] the | 164 |
|
| 3 | back [adv prt] the | 164 |
|
| 4 | back up [art] | 134 |
|
| 5 | back off [art] | 32 |
|
| 6 | back [adv prt] a | 7 |
|
| 7 | back [adv prt] a | 7 |
|
