C222123232321333131133133313331323133313233311232313233232122322221   >>    C22212323232133313113313331333132313331323331123231323323212232222   <<    C222123232321333131133133313331323133313233311232313233232122322223   >>      C222123232321333131133133313331323133313233311232313233232122322222   >>