C22212323232133313113313331333133313231323132222123312132233311   >>    C2221232323213331311331333133313331323132313222212331213223331   <<    C22212323232133313113313331333133313231323132222123312132233313   >>      C22212323232133313113313331333133313231323132222123312132233312   >>