C2123132222131133131121131211113313231322331333132233132311233311   >>    C212313222213113313112113121111331323132233133313223313231123331   <<    C2123132222131133131121131211113313231322331333132233132311233313   >>      C2123132222131133131121131211113313231322331333132233132311233312   >>