C11111211113313112113313331333133313231311331333133312111133121322331333111121   >>    C1111121111331311211331333133313331323131133133313331211113312132233133311112   <<    C11111211113313112113313331333133313231311331333133312111133121322331333111123   >>      C11111211113313112113313331333133313231311331333133312111133121322331333111122   >>