C11111211113313112113313331333133313221333133313113313331323331323223212231   >>    C1111121111331311211331333133313331322133313331311331333132333132322321223   <<    C11111211113313112113313331333133313221333133313113313331323331323223212233   >>      C11111211113313112113313331333133313221333133313113313331323331323223212232   >>