A determination is made of relative priorities of the subgroups and {HEAD ~ a quorum} is awarded to the subgroup having {TAIL ~ a highest relative priority} 
A determination is made of relative priorities of the subgroups and { HEAD ~ a quorum } is awarded to the subgroup having { TAIL ~ a highest relative priority }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL