def setUp(self):
     self.ic = InternalCitations(Node(label=['111_22']))
     cits = [
         '111_22', '111_22-I', '111_22-I-A', '111_22-I-A-1',
         '111_22-I-A-1-a', '111_22-I-A-1-a-i', '111_22-I-A-1-a-i-a'
     ]
     self.ic.known_citations = {tuple(cit.split('-')) for cit in cits}