C11112331333132311331333133313331333132313112233211111121132311   >>    C1111233133313231133133313331333133313231311223321111112113231   <<    C11112331333132311331333133313331333132313112233211111121132313   >>      C11112331333132311331333133313331333132313112233211111121132312   >>