C11111211113313112113313331333133313331333132313331333133313331322321232331   >>    C1111121111331311211331333133313331333133313231333133313331333132232123233   <<    C11111211113313112113313331333133313331333132313331333133313331322321232333   >>      C11111211113313112113313331333133313331333132313331333133313331322321232332   >>