Double Pair (6-way): Two different digits are used twice. For example, 6677. Each combination of this type has 6 different box combinations, so your odds of winning by playing one “double pair” box combination would be approximately 1 in 1,667. There are 45 unique double double pairs these pairs can fall 6-different ways and will make up 270 straight combinations! 0011, 0022, 0033, 0044, 0055, 0066, 0077, 0088, 0099, 1122, 1133, 1144, 1155, 1166, 1177, 1188, 1199, 2233, 2244, 2255, 2266, 2277, 2288, 2299, 3344, 3355, 3366, 3377, 3388, 3399, 4455, 4466, 4477, 4488, 4499, 5566, 5577, 5588, 5599, 6677, 6688, 6699, 7788, 7799, 8899.