C111123313331323113313331333133313331323112133313331333132313113313223321   >>    C11112331333132311331333133313331333132311213331333133313231311331322332   <<    C111123313331323113313331333133313331323112133313331333132313113313223323   >>      C111123313331323113313331333133313331323112133313331333132313113313223322   >>