12 Days of Christmas
17th
99 Bottles of Beer
17th
Abundant Numbers
36th
Christmas Trees
69th
CSS Colors
21st4th
Divisors
70th
Emojify
Evil Numbers
66th
Fibonacci
179th
Fizz Buzz
158th
Leap Years
97th
Morse Encoder
29th
Niven Numbers
85th
Odious Numbers
53rd
Ordinal Numbers
37th
Pangram Grep
14th
Tongue-twisters
47th
United States