C222123232321333131133133313331323133313232313233232333132232211   >>    C22212323232133313113313331333132313331323231323323233313223221   <<    C222123232321333131133133313331323133313232313233232333132232213   >>      C222123232321333131133133313331323133313232313233232333132232212   >>