C222123232321333131133133313331323133313233311232313233232312331221   >>    C22212323232133313113313331333132313331323331123231323323231233122   <<    C222123232321333131133133313331323133313233311232313233232312331223   >>      C222123232321333131133133313331323133313233311232313233232312331222   >>