A change gear system comprises a driven case, a driving shaft and shifting means for shifting the drive shaft, and {HEAD ~ three sliding frames} are provided in {TAIL ~ alignment} in the driven case 
are provided in
A change gear system comprises a driven case , a driving shaft and shifting means for shifting the drive shaft , and { HEAD ~ three sliding frames } are provided in { TAIL ~ alignment } in the driven case
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH