C22212323232133313113313331333132313331323131323131222121233221   >>    C2221232323213331311331333133313231333132313132313122212123322   <<    C22212323232133313113313331333132313331323131323131222121233223   >>      C22212323232133313113313331333132313331323131323131222121233222   >>