C22212323232133313113313331333132313331323132313331132213223132221   >>    C2221232323213331311331333133313231333132313231333113221322313222   <<    C22212323232133313113313331333132313331323132313331132213223132223   >>      C22212323232133313113313331333132313331323132313331132213223132222   >>