C212212121212113313221323131323132313132322331323132233132313233213231322331   >>    C21221212121211331322132313132313231313232233132313223313231323321323132233   <<    C212212121212113313221323131323132313132322331323132233132313233213231322333   >>      C212212121212113313221323131323132313132322331323132233132313233213231322332   >>