C2123132222131133131121131211113313231322331333132313223313232111   >>    C212313222213113313112113121111331323132233133313231322331323211   <<    C2123132222131133131121131211113313231322331333132313223313232113   >>      C2123132222131133131121131211113313231322331333132313223313232112   >>