C2123132222131133131121131211113313231322331333132212111111331322232322331   >>    C212313222213113313112113121111331323132233133313221211111133132223232233   <<    C2123132222131133131121131211113313231322331333132212111111331322232322333   >>      C2123132222131133131121131211113313231322331333132212111111331322232322332   >>