User blog comment:SpiritedDreaming/RWBY: Attack on Kevin Tower Defense Game/@comment-25936766-20160920122749/@comment-26018514-20160920185300

I'm pretty sure 13th is an anomaly actually... rd is tied to almost everything else ending with a 3...

3rd, 13th, 23rd, 33rd, 43rd, 53rd, 63rd, 73rd, 83rd, 93rd, 103rd, 113th... etc