for s in g:
   if s[2]<=t and s[3]<=e and s[4]<=q and s[6]<=r and (s[2]<t or s[3]<e or s[4]<q or s[6]<r): return None
  ng=[]
  for s in g:
   if t<=s[2] and e<=s[3] and q<=s[4] and r<=s[6] and (t<s[2] or e<s[3] or q<s[4] or r<s[6]): dl+=1
   else: ng.append(s)
  ng.append(L)
  groups[key]=ng
  return L