C222123232321333131133133313331323133313233311232313233232233221331   >>    C22212323232133313113313331333132313331323331123231323323223322133   <<    C222123232321333131133133313331323133313233311232313233232233221333   >>      C222123232321333131133133313331323133313233311232313233232233221332   >>