C2123132222131133131121131211113313333133313331333132233132233132313112211   >>    C212313222213113313112113121111331333313331333133313223313223313231311221   <<    C2123132222131133131121131211113313333133313331333132233132233132313112213   >>      C2123132222131133131121131211113313333133313331333132233132233132313112212   >>