C22212323232133313113313331333133313231323132222123312322233231   >>    C2221232323213331311331333133313331323132313222212331232223323   <<    C22212323232133313113313331333133313231323132222123312322233233   >>      C22212323232133313113313331333133313231323132222123312322233232   >>