C222123232321333131133133313331323133313233311232313233232323121   >>    C22212323232133313113313331333132313331323331123231323323232312   <<    C222123232321333131133133313331323133313233311232313233232323123   >>      C222123232321333131133133313331323133313233311232313233232323122   >>