If you are still stuck, jump back to Hard Medium Full Answer.

Hard Medium Level 1
T
S
V

Hard Medium Level 2
S
L
S

Hard Medium Level 3
E
P

Hard Medium Level 4
C
S
C

Hard Medium Level 5
F
T
L

Hard Medium Level 6
M
G
C

Hard Medium Level 7
C
R
R

Hard Medium Level 8
B
S
S

Hard Medium Level 9
T
Z
S

Hard Medium Level 10
M
R
H
T

Hard Medium Level 11
F
N
E
L

Hard Medium Level 12
T
F
V
O
P

Hard Medium Level 13
F
C
R

Hard Medium Level 14
V
L
H
B

Hard Medium Level 15
S
P

Hard Medium Level 16
S
C
V

Hard Medium Level 17
M
A
W

Hard Medium Level 18
Y
C
S

Hard Medium Level 19
W
A
S

Hard Medium Level 20
O
I
S