easy 00
intermediate 01
intermediate 02
intermediate 03
intermediate 04
intermediate 05
intermediate 06
intermediate 07
intermediate 08
intermediate 09
intermediate 0A
intermediate 0B
intermediate 0C
intermediate 0D
intermediate 0E
intermediate 0F
intermediate 10
intermediate 11
intermediate 12
intermediate 13
intermediate 14
intermediate 15
intermediate 16
intermediate 17
intermediate 18
intermediate 19
intermediate 1A
intermediate 1B
intermediate 1C
intermediate 1D
intermediate 1E
intermediate 1F
medium 20
medium 21
medium 22
medium 23
medium 24
medium 25
medium 26
medium 27
medium 28
medium 29
medium 2A
medium 2B
medium 2C
medium 2D
medium 2E
medium 2F
medium 30
medium 31
medium 32
medium 33
medium 34
medium 35
medium 36
medium 37
medium 38
medium 39
medium 3A
medium 3B
medium 3C
medium 3D
medium 3E
medium 3F
medium 40
medium 41
medium 42
medium 43
medium 44
medium 45
medium 46
medium 47
medium 48
medium 49
medium 4A
medium 4B
medium 4C
medium 4D
medium 4E
medium 4F
medium 50
medium 51
medium 52
medium 53
medium 54
medium 55
medium 56
medium 57
medium 58
medium 59
medium 5A
medium 5B
medium 5C
medium 5D
medium 5E
medium 5F
medium 60
medium 61
medium 62
medium 63
medium 64
medium 65
medium 66
medium 67
medium 68
medium 69
medium 6A
medium 6B
medium 6C
medium 6D
medium 6E
medium 6F
medium 70
medium 71
medium 72
medium 73
medium 74
medium 75
medium 76
medium 77
medium 78
medium 79
medium 7A
medium 7B
medium 7C
medium 7D
medium 7E
medium 7F
medium 80
medium 81
hard 82
hard 83
hard 84
hard 85
hard 86
hard 87
hard 88
hard 89
hard 8A
hard 8B
hard 8C
hard 8D
hard 8E
hard 8F
hard 90
hard 91
hard 92
hard 93
hard 94
hard 95
hard 96
hard 97
hard 98
hard 99
hard 9A
hard 9B
hard 9C
hard 9D
hard 9E
hard 9F
hard A0
hard A1
hard A2
hard A3
hard A4
hard A5
hard A6
hard A7
hard A8
hard A9
hard AA
hard AB
hard AC
hard AD
hard AE
hard AF
hard B0
hard B1
hard B2
hard B3
hard B4
hard B5
challenging B6
challenging B7