C212212121212113313221323131323132313132322331323132233132313233213232231   >>    C21221212121211331322132313132313231313232233132313223313231323321323223   <<    C212212121212113313221323131323132313132322331323132233132313233213232233   >>      C212212121212113313221323131323132313132322331323132233132313233213232232   >>