C22212323232133313113313331333132313331323132213231312131223312233231   >>    C2221232323213331311331333133313231333132313221323131213122331223323   <<    C22212323232133313113313331333132313331323132213231312131223312233233   >>      C22212323232133313113313331333132313331323132213231312131223312233232   >>