C222123232321333131133133313331323132313331323112331233233221221   >>    C22212323232133313113313331333132313231333132311233123323322122   <<    C222123232321333131133133313331323132313331323112331233233221223   >>      C222123232321333131133133313331323132313331323112331233233221222   >>