12 Days of Christmas
22nd
99 Bottles of Beer
16th
Abundant Numbers
37th
Christmas Trees
69th
CSS Colors
18th4th
Divisors
68th
Emojify
Evil Numbers
63rd
Fibonacci
171st
Fizz Buzz
157th
Leap Years
94th
Morse Encoder
24th
Niven Numbers
82nd
Odious Numbers
50th
Ordinal Numbers
34th
Pangram Grep
13th
Tongue-twisters
44th
United States