C11112331333132311331333132313331323132313232233132313331322121   >>    C1111233133313231133133313231333132313231323223313231333132212   <<    C11112331333132311331333132313331323132313232233132313331322123   >>      C11112331333132311331333132313331323132313232233132313331322122   >>