C111123313331323113313331333133313331323112133313331333132233112333321   >>    C11112331333132311331333133313331333132311213331333133313223311233332   <<    C111123313331323113313331333133313331323112133313331333132233112333323   >>      C111123313331323113313331333133313331323112133313331333132233112333322   >>