Left Middle Left
J K L
“up” for Up Arrow Key to toggle upper set of symbols
“down” for Down Arrow Key to toggle lower set of symbols
“->”for Right Arrow Key to toggle right set of symbols
“<-“ for Left Arrow Key to toggle left set of symbols

Roof
K,
-> L ,
<- K


4th Floor
J,
-> K,
down K L


3rd Floor
L,
down J,
up J,
down L,
<- J


2nd Floor
-> J,
down J L J,
<- J,
-> L,
up L


1st Floor
<- J,
-> L,
down L,
-> K,
<- J,
-> L,
up L,
down K,
up K



To fight The Endless One (Mr. Addison Monster Boss) If you get hit, you'll need to restart the chapter to do this, you have to close the game from the task bar and then re-enter the game and select restart chapter because you can't do anything in the boss fight if I recall correctly. Please leave comments if this is untrue. There are several parts in the game where you have to do this if you mess up on an achievement though.... I wish they'd just alter it to allow manual saving!
If you're just trying to get through this part and you get hit, repeat the previous set of symbols you entered prior to the ones you just entered once you fall down a level, and then go through the level sets in the exact same order.

1st Level:
J,
-> K,
down K L


2nd Level:
L,
down J,
up J,
down L,
< -J


3rd Level:
-> J,
down J L J,
<- J,
-> L,
up L


4th Level:
<- J,
-> L,
down L,
-> K,
<- J,
-> L,
up L,
down K,
up K


5th Level:
K,
-> K,
down K,
<- K,
up L,
-> L,
down L,
<- L,
<-J,
up L