A skip down shift from {HEAD ~ a first shift position} to a second shift position is effected by {TAIL ~ way} of a third shift position which is not used in a normal shifting 
A skip down shift from { HEAD ~ a first shift position } to a second shift position is effected by { TAIL ~ way } of a third shift position which is not used in a normal shifting
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH