C22212323232133313113313331333132313331323132213231312121213121111   >>    C2221232323213331311331333133313231333132313221323131212121312111   <<    C22212323232133313113313331333132313331323132213231312121213121113   >>      C22212323232133313113313331333132313331323132213231312121213121112   >>