practice staircase method step 1
| 12 | 0:00 | | |
| 13 | 0:13 | | |
| 14 | 0:20 | | |
| 14 | 0:47 | | |
| 14 | 1:06 | | |
| 14 | 1:32 | | |
| 14 | 1:36 | | |
| 14 | 1:37 | | |
| 14 | 1:38 | | |
| 15 | 1:50 | | |
| 15 | 2:02 | | |
| 16 | 2:14 | | |
| 17 | 2:17 | | |
| 17 | 2:18 | | |
| 19 | 2:26 | | |
| 20 | 2:32 | | |
| 21 | 2:39 | | |
| 22 | 2:47 | | |
| 23 | 2:54 | | |
| 24 | 3:00 | | |
| 24 | 3:01 | | |
| 25 | 3:08 | | |
| 27 | 3:15 | | |
| 28 | 3:22 | | |
| 28 | 3:23 | | |
| 29 | 3:46 | | |
| 29 | 3:48 | | |
| 30 | 3:56 | | |
| 30 | 3:58 | | |
| 30 | 3:59 | | |
| 31 | 4:03 | | |
| 32 | 4:10 | | |
| 32 | 4:12 | | |
| 33 | 4:17 | | |
| 35 | 4:24 | | |
| 36 | 4:31 | | |
| 36 | 4:34 | | |
| 37 | 4:39 | | |
| 38 | 4:46 | | |
| 38 | 4:49 | | |
| 39 | 4:53 | | |
| 39 | 5:00 | | |
| 40 | 5:07 | | |
| 40 | 5:08 | | |
| 44 | 5:14 | | |
| 45 | 5:22 | | |
| 46 | 5:29 | | |
| 47 | 5:51 | | |
| 49 | 5:59 | | |
| 51 | 6:50 | | |
| 53 | 7:40 | | |
| 54 | 9:58 | | |
| 52 | 10:03 | | |
| 52 | 10:09 | | |
| 50 | 10:16 | | |
| 48 | 10:23 | | |
| 48 | 10:27 | | |
| 45 | 10:31 | | |
| 44 | 10:38 | | |
| 39 | 10:50 | | |
| 39 | 10:52 | | |
| 39 | 10:56 | | |
| 24 | 11:04 | | |
| 15 | 11:16 | | |
| 7 | 11:30 | |
| 12 | 0:00 | | |
| 13 | 0:12 | | |
| 14 | 0:20 | | |
| 14 | 0:24 | | |
| 15 | 0:42 | | |
| 16 | 0:45 | | |
| 16 | 0:54 | | |
| 17 | 1:06 | | |
| 18 | 1:18 | | |
| 19 | 1:21 | | |
| 19 | 1:30 | | |
| 20 | 1:33 | | |
| 21 | 1:46 | | |
| 21 | 1:51 | | |
| 22 | 1:58 | | |
| 22 | 2:02 | | |
| 22 | 2:08 | | |
| 23 | 2:20 | | |
| 24 | 2:26 | | |
| 25 | 2:31 | | |
| 26 | 2:37 | | |
| 26 | 2:43 | | |
| 29 | 2:55 | | |
| 31 | 3:03 | | |
| 32 | 3:07 | | |
| 33 | 3:13 | | |
| 33 | 3:14 | | |
| 33 | 3:19 | | |
| 35 | 3:21 | | |
| 36 | 3:31 | | |
| 38 | 3:37 | | |
| 38 | 3:39 | | |
| 39 | 3:43 | | |
| 40 | 3:49 | | |
| 41 | 3:56 | | |
| 41 | 4:01 | | |
| 44 | 4:06 | | |
| 44 | 4:08 | | |
| 47 | 4:14 | | |
| 48 | 4:18 | | |
| 48 | 4:20 | | |
| 51 | 4:24 | | |
| 52 | 4:32 | | |
| 54 | 4:43 | | |
| 54 | 4:48 | | |
| 54 | 4:50 | | |
| 54 | 5:09 | | |
| 54 | 5:10 | | |
| 59 | 5:15 | | |
| 59 | 5:17 | | |
| 59 | 5:22 | | |
| 59 | 5:27 | | |
| 64 | 5:34 | | |
| 66 | 5:35 | | |
| 66 | 5:43 | | |
| 66 | 5:45 | | |
| 69 | 5:54 | | |
| 71 | 6:00 | | |
| 71 | 6:03 | | |
| 75 | 6:04 | | |
| 75 | 6:06 | | |
| 78 | 6:17 | | |
| 79 | 6:18 | | |
| 79 | 6:19 | | |
| 79 | 6:21 | | |
| 79 | 6:22 | | |
| 79 | 6:24 | | |
| 85 | 6:30 | | |
| 85 | 6:31 | | |
| 87 | 6:38 | | |
| 87 | 6:39 | | |
| 91 | 6:42 | | |
| 91 | 6:43 | | |
| 94 | 6:49 | | |
| 94 | 6:56 | | |
| 94 | 6:57 | | |
| 94 | 6:59 | | |
| 98 | 7:06 | | |
| 98 | 7:07 | | |
| 101 | 7:17 | | |
| 101 | 7:18 | | |
| 101 | 7:19 | | |
| 104 | 7:23 | | |
| 104 | 7:24 | | |
| 104 | 7:25 | | |
| 109 | 7:31 | | |
| 112 | 7:42 | | |
| 112 | 7:43 | | |
| 117 | 7:49 | | |
| 120 | 8:00 | | |
| 120 | 8:01 | | |
| 127 | 8:09 | | |
| 127 | 8:11 | | |
| 127 | 8:18 | | |
| 132 | 8:35 | | |
| 132 | 8:36 | | |
| 132 | 8:37 | | |
| 137 | 8:43 | | |
| 137 | 8:48 | | |
| 137 | 8:53 | | |
| 137 | 8:54 | | |
| 142 | 9:04 | | |
| 144 | 9:18 | | |
| 144 | 9:24 | | |
| 144 | 9:30 | | |
| 144 | 9:31 | | |
| 151 | 9:48 | | |
| 151 | 9:49 | | |
| 158 | 9:53 | | |
| 158 | 10:06 | | |
| 165 | 10:11 | | |
| 166 | 10:18 | | |
| 166 | 10:23 | | |
| 166 | 10:24 | | |
| 173 | 10:28 | | |
| 174 | 10:35 | | |
| 174 | 10:37 | | |
| 174 | 10:41 | | |
| 174 | 10:42 | | |
| 180 | 10:46 | | |
| 182 | 10:57 | | |
| 182 | 10:59 | | |
| 182 | 11:00 | | |
| 188 | 11:04 | | |
| 188 | 11:09 | | |
| 188 | 11:10 | | |
| 189 | 11:11 | | |
| 189 | 11:15 | | |
| 189 | 11:17 | | |
| 189 | 11:18 | | |
| 197 | 11:22 | |