advance back up start[>]

5450[D!][U][G]
5451[D!][U][G]
5452[D!][U][G]
5453[D!][U][G]
5454[D!][U][G]
5455[D!][U][G]
5456[D!][U][G]
5457[D!][U][G]
5458[D!][U][G]