1 0: 6 segments lit: abcefg
19 2: 5 segments lit: acdeg
28 3: 5 segments lit: acdfg -> 7+dg
37 4: 4 segments lit: bcdf -> 1+bd
46 5: 5 segments lit: abdfg
55 6: 6 segments lit: abdefg
64 7: 3 segments lit: acf -> 1+a <-- this means we can work out a
73 8: 7 segments lit: abcdefg
82 9: 6 segments lit: abcdfg
91 0: abc efg -> 1 + 2 + 4 + 16 + 32 + 64 -> 119
92 1: c f -> 4 + 32 -> 36
93 2: a cde g -> 1 + 4 + 8 + 16 + 64 -> 93
94 3: a cd fg -> 1 + 4 + 8 + 32 + 64 -> 109
95 4: bcd f -> 2 + 4 + 8 + 32 -> 46
96 5: ab d fg -> 1 + 2 + 8 + 32 + 64 -> 107
97 6: ab defg -> 1 + 2 + 8 + 16 + 32 + 64 -> 123
98 7: a c f -> 1 + 4 + 32 -> 37
99 8: abcdefg -> 1 + 2 + 4 + 8 + 16 + 32 + 64 -> 127
100 9: abcd fg -> 1 + 2 + 4 + 8 + 32 + 64 -> 111
105 d: 7 - only one that's exactly a 7 count
106 e: 4 - only one that's exactly a 4 count
107 f: 9 - only one that's exactly a 9 count