C11112331333132311331333133313331333132313311232233132212323221   >>    C1111233133313231133133313331333133313231331123223313221232322   <<    C11112331333132311331333133313331333132313311232233132212323223   >>      C11112331333132311331333133313331333132313311232233132212323222   >>