Move with:
U = UP
D = DOWN
L = LEFT
R = RIGHT

Moves that require timing will be underlined and grouped together:
LR Left then Right, they should meet in a meaningful way.
(Make sure to have a pause between pressing the two, the length of the pause is up to you.)

Moves to be pressed together will have [ ] around it and be grouped together:
[LR] Left and Right together.

Moves that require timing combined with being pressed together may look like this:
L[UD]
Press Left, wait then press Up and Down together.

Level 1
R

Level 2
RU

Level 3
LURD

Level 4
URDLU

Level 5
RULUL DRUL

Level 6
RULUR ULUR

Level 7
URDLU LURD

Level 8
RULD

Level 9
URDLD RULDL U

Level 10
URURD RURDL ULDR

Level 11
RULDR DRUL

Level 12
RDRU

Level 13
LURUR DR

Level 14
LDRLU R

Level 15 [Timing]
RU L

Level 16 [Timing]
RU L

Level 17
D [LR]

Level 18 [Timing]
U RL D

Level 19
DLLU

Level 20 [Timing]
U RD RD

Level 21 [Timing]
URUL RD LU LDLUL URDRD

Level 22 [Timing]
RDRDL U(UD)RL DR

Level 23
LDRU [DU] RUULDR

Level 24 [Timing]
R[DU] L

Level 25 [Timing]
U RL DLRU

Level 26 [Timing]
[DL]R UR DL UDL

Level 27
URURD ULDLU L

Level 28 [Timing]
DLULU LD RL URURU RULDR LR UDLDL URDLUR

Level 29 [Timing]
U RL LDR

Level 30 [Timing]
L DU DRRUL [LR]

Level 31 [Timing]
L[UD] R [LR]

Level 32 [Timing]
LU URU [LR] UD [UD]

Level 33
U [LR] DULDL URDRU

Level 34 [Timing]
RD L RU [UD]

Level 35 [Timing]
LR LR R RL RL RL

Level 36 [Timing]
RL DLRUR DLDRD RURDL DRDRU RDLDR D RL RL LR RL[LR]

Level 37
U [LR] D [UD]

Level 38 [Timing]
LRU D

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