C11112331333132311331333131333133313231333132212111133131232323321   >>    C1111233133313231133133313133313331323133313221211113313123232332   <<    C11112331333132311331333131333133313231333132212111133131232323323   >>      C11112331333132311331333131333133313231333132212111133131232323322   >>