C123211131133132233131323132313233313233313133313132313232213231111   >>    C12321113113313223313132313231323331323331313331313231323221323111   <<    C123211131133132233131323132313233313233313133313132313232213231113   >>      C123211131133132233131323132313233313233313133313132313232213231112   >>