12 Days of Christmas
16th
99 Bottles of Beer
14th
Abundant Numbers
35th
Christmas Trees
68th
CSS Colors
19th4th
Divisors
65th
Emojify
Evil Numbers
60th
Fibonacci
160th
Fizz Buzz
149th
Leap Years
88th
Morse Encoder
26th
Niven Numbers
76th
Odious Numbers
47th
Ordinal Numbers
33rd
Pangram Grep
13th
Tongue-twisters
43rd
United States