| Share | Phrase |
|---|
| 23.74% | refer back to step |
| 16.90% | determine [temporal] refer back |
| 13.09% | calculate [temporal] refer back |
| 11.37% | refer back ADVP step |
| 9.08% | now [temporal] refer back |
| 7.84% | output [temporal] refer back |
| 6.89% | valve [temporal] refer back |
| 5.82% | refer back at step |
| 2.64% | output refer back |
| 2.58% | valve refer back |