Answers
1=e; 2=c; 3=c; 4=e; 5=a; 6=b; 7=a; 8=d; 9=b; 10=e;
11: a=3; b=5; c=3;
12: a=2; b=3; c=4;
13: a=3; b=2; c=6;
14=b;
15: a=4; b=4; c=3; d=4; e=1;
16=b