12 Days of Christmas
48th
99 Bottles of Beer
58th
Abundant Numbers
44th
Arabic to Roman
25th
Christmas Trees
55th
CSS Colors
47th
Cubes
13th
Diamonds
31st
Divisors
64th
Evil Numbers
38th
Evil Numbers (Long)
27th
Fibonacci
105th
Fizz Buzz
188th
Happy Numbers
26th
Leap Years
85th
Look and Say
18th
Odious Numbers
44th
Pangram Grep
40th
Tongue-twisters
29th