C222123232321333131133133313331323133313233311232313233232323211231   >>    C22212323232133313113313331333132313331323331123231323323232321123   <<    C222123232321333131133133313331323133313233311232313233232323211233   >>      C222123232321333131133133313331323133313233311232313233232323211232   >>