advance back up start[>]

492[D!][U][G]
493[D!][U][G]
494[D!][U][G]
495[D!][U][G]
496[D!][U][G]
497[D!][U][G]
498[D!][U][G]
499[D!][U][G]
500[D!][U][G]
501[D!][U][G]