public Set<String> getRSet(PVMap pvMap, Set<String> prev)
{
Set<String> sVncls, sVerb, curr = new HashSet<String>();
PVRoleset pvRoleset;
PVVerb pvVerb;
int[] count = new int[5];
int total = 0, c;
for (String verb : pvMap.keySet())
{
pvVerb = pvMap.get(verb);
sVerb = pvVerb.keySet();
total += sVerb.size();
for (String roleset : sVerb)
{
pvRoleset = pvVerb.get(roleset);
sVncls = new HashSet<String>(pvRoleset.keySet());
c = sVncls.size();
sVncls.removeAll(prev);
if (sVncls.isEmpty()) c = 1;