C11111211113313112113313331333133313331333131211113313232233131213331   >>    C1111121111331311211331333133313331333133313121111331323223313121333   <<    C11111211113313112113313331333133313331333131211113313232233131213333   >>      C11111211113313112113313331333133313331333131211113313232233131213332   >>