C2123132222131133131121131211113313231322331333132212111113223332321   >>    C212313222213113313112113121111331323132233133313221211111322333232   <<    C2123132222131133131121131211113313231322331333132212111113223332323   >>      C2123132222131133131121131211113313231322331333132212111113223332322   >>