7/15 15:35 T5
The sound "ŋ" in the note of Problem 5 is unrelated to the problem.
7/14 21:04 T1
Certain occurences of "thin" in Problem 1 have been corrected to "slim."
7/13 20:37 T2
The issue of potentially illegible symbols in Problem 2 has been fixed and explanations have been added.