1c The total flow: 2s 13 3 4c flow values: 5f 0 6 3 6f 0 1 0 7f 0 2 10 8f 1 5 1 9f 1 0 0 10f 1 3 0 11f 2 4 4 12f 2 3 6 13f 2 0 0 14f 3 7 5 15f 3 2 0 16f 3 1 1 17f 4 5 4 18f 4 6 0 19f 5 4 0 20f 5 7 5 21f 6 7 3 22f 6 4 0 23f 7 6 0 24f 7 5 0 25