C2123132222131133131121131211113313231322331333132233131133133313331333223221   >>    C212313222213113313112113121111331323132233133313223313113313331333133322322   <<    C2123132222131133131121131211113313231322331333132233131133133313331333223223   >>      C2123132222131133131121131211113313231322331333132233131133133313331333223222   >>