From top to bottom:
1st = accelMode="0x0" = constant speed
2nd = accelMode="0x1" = starts slow ends fast
3rd = accelMode="0x2" = first half fast, second half slow?
4th = accelMode="0x3" = starts slow, middle fast, ends slow
5th = accelMode="0x4" = starts fast ends slow
...
https://www.youtube.com/watch?v=XPWHpOGQB_E