C22212323232133313113313331333133313231323132222123312323223331   >>    C2221232323213331311331333133313331323132313222212331232322333   <<    C22212323232133313113313331333133313231323132222123312323223333   >>      C22212323232133313113313331333133313231323132222123312323223332   >>