C2221333133313331311233132313331333133313131133133313233113313233122221   >>    C222133313331333131123313231333133313331313113313331323311331323312222   <<    C2221333133313331311233132313331333133313131133133313233113313233122223   >>      C2221333133313331311233132313331333133313131133133313233113313233122222   >>