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