C222123232321333131133133313331323133313231322132313121312213233121   >>    C22212323232133313113313331333132313331323132213231312131221323312   <<    C222123232321333131133133313331323133313231322132313121312213233123   >>      C222123232321333131133133313331323133313231322132313121312213233122   >>