C123211131133132233131323132313233313233313133313132313232213231121   >>    C12321113113313223313132313231323331323331313331313231323221323112   <<    C123211131133132233131323132313233313233313133313132313232213231123   >>      C123211131133132233131323132313233313233313133313132313232213231122   >>