Secret Code #18 HINT: W=S

K U N N, * W Z U ' W * V T G * L T P O * D C U O D R U *

M Z J M A, * K D V G J V R * G T * W U U * G Z U * R P L *

K Z T ' W * G O L J V R * G T * A J N N * Z U O.

~ Duo

Secret Code #19 HINT: K=I

K R * M Z W ' Q P * T Z V K O Y * H B E H ' L * N Q W P X, *

J W H * K R * M Z W ' Q P * J P K O Y * L E Q N E L H K N *

H B E H ' L * P U P O * A Z Q L P.

~ Duo, Endless Waltz

Secret Code #20 HINT: L=C

H Q R * J Y S R * D Y B * W X C Q H * H Q R * J Y S R *

H Q R * T G L S X W X L R * W Y S * F R G L R *

E R L Y J R T * G * U G T H R. *** D Y B * J B T H *

Q G N R * S R G A X M R K * H Q G H.

~ Heero, Endless Waltz