C2221232323213331311331333133313231333132313232313123232212211332211   >>    C222123232321333131133133313331323133313231323231312323221221133221   <<    C2221232323213331311331333133313231333132313232313123232212211332213   >>      C2221232323213331311331333133313231333132313232313123232212211332212   >>