As previously noted, {HEAD ~ the counter rotational gearing} may be accomplished with {TAIL ~ a continuously variable transmission} 
accomplished with
As previously noted , { HEAD ~ the counter rotational gearing } may be accomplished with { TAIL ~ a continuously variable transmission }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL