OS in corner vs quick rise/roll = 2a>2a+2c> 2a~5c
if they roll/quick rise then they eat 2a > 2c and have enough time to confirm into 5c. emergency tech = 2a all day.
combo if they quick rise = 2a> 2a+2c>2a~5c > 214d~b > 6c > small hiren loop
combo if they roll out of corner = 2a> 2a+2c >2a~5c > 623d