def run(load,check):
 hits=load('C301_DATA.json')['all_matches'];reg=load('C286_DATA.json')['target_register'];pairs=[]
 keys=['tradition','gear','rail','Cainan','Terah60','full430']
 for upper in hits:
  if upper['cumulative']['role']!='Shem':continue
  u=upper['regular']; lower_role={'Noah birth':'Flood start','Shem birth':'Shem death'}.get(u['role'])
  if lower_role is None:continue
  for lower in hits:
   l=lower['regular']; cu=upper['cumulative'];cl=lower['cumulative']
   if cl['role']=='Flood' and all(cu[k]==cl[k] for k in ['profile','index']) and l['role']==lower_role and all(u.get(k)==l.get(k) for k in keys):
    pairs.append({'profile':cu['profile'],'index':cu['index'],'upper':upper,'lower':lower,'cumulative_width':cu['BC']-cl['BC'],'regular_width':u['center']-l['center'],'gap_difference':lower['gap']-upper['gap']})
 coverage=[]
 for j in range(8):
  row=[p for p in pairs if p['profile']=='LXX_OFF' and p['index']==j]
  required=(5890-j-2832,5290-j-2832)
  coverage.append({'index':j,'required_regular_upper':required[0],'required_regular_lower':required[1],'complete_segments':row,'upper_point_hits':[h for h in hits if h['cumulative']['profile']=='LXX_OFF' and h['cumulative']['role']=='Shem' and h['cumulative']['index']==j],'lower_point_hits':[h for h in hits if h['cumulative']['profile']=='LXX_OFF' and h['cumulative']['role']=='Flood' and h['cumulative']['index']==j]})
 used=[]
 for p in pairs:used.extend([p['upper'],p['lower']])
 orphans=[h for h in hits if h not in used]
 check('twelve labeled complete segments',len(pairs)==12)
 check('eight coordinate segments',len({(p['upper']['regular']['center'],p['lower']['regular']['center']) for p in pairs})==8)
 check('all three differences600',all(p['cumulative_width']==p['regular_width']==p['gap_difference']==600 for p in pairs))
 check('complete segment families4MT5SP3LXX',[sum(p['upper']['regular']['tradition']==t for p in pairs) for t in ['MT','SP','LXX']]==[4,5,3])
 check('LXX seven indices missing1',[c['index'] for c in coverage if c['complete_segments']]==[0,2,3,4,5,6,7])
 check('gap lower exists upper absent',coverage[1]['required_regular_upper']==3057 and coverage[1]['required_regular_lower']==2457 and not coverage[1]['upper_point_hits'] and len(coverage[1]['lower_point_hits'])==1)
 check('four unpaired Flood-close labels',len(orphans)==4 and all(h['regular']['role']=='Flood close' for h in orphans))
 check('no upper3057 anywhere in held register',not [t for t in reg if t['center']==3057 and t['role'] in ['Noah birth','Shem birth']])
 check('same phase600 identity',all((p['upper']['regular']['center']+e)-(p['lower']['regular']['center']+e)==600 for p in pairs for e in [-0.25,0.25]))
 return {'complete_segments':pairs,'labeled_segments':len(pairs),'coordinate_segments':len({(p['upper']['regular']['center'],p['lower']['regular']['center']) for p in pairs}),'LXX_OFF_annual_coverage':coverage,'unpaired_point_matches':orphans,'all_required_source_bindings_retained':True,'new_Gears_or_rails':False}