Vertically layered sokoban style with donuts. Yum!

Level 1
DLLUR RRRR

Level 2
URRDU LDLDR RRRRU

Level 3
RURDL DRDLD LLURR RURDD RR

Level 4
ULLDD UURRD LULDD DLRLD RRUUR DLDRR RR

Level 5
RURDD ULLDR URDDD LLLDR ULURR RRRR

Level 6
ULLDD URRDL ULDDD RDRUL LLURL DDRUL URRRR RR

Level 7
LUURR DDUUL DLDRU RDDLR RLDDL LURDR ULURR RRR

Level 8
UURDL DRRRU RDULL DDLLD DRRRU LURRR R

Level 9
RUULD LDRRR UDURR DDDLR UULDD UUULD DDRDL LL

Level 10
LDDRR LLUUR RDDDU UULDL DRURD LDRUR DRDDL LURRR UUR

Level 11
DRRRR DDLLL DLLU

Level 12
URDRL LDDRU LURRR RRRDL ULDDR DLLDL

Level 13
DRRDU LLDRU RDLLU UURRD DDUUU LDDLD RURDD D

Level 14
URDRD DDLLU URRDD LULUR RRURD DDR

Level 15
DUURD LDRUU RDLDR LLDDR RRRUL URDDL LLLUR RRDRU LURRR

Level 16
DURDL DRDDR RUDLL UURRD DLULU RRRR

Level 17
RDULL DDRRU ULDLD RRRRR R

Level 18
DRLUU RDDUU RDDDL LDDRU LURRR RRRU

Level 19
URRDU LLDRR LDDDL DRUUU ULLDR URDDD LDRRR RUUUD DDLLL UUUUR
RRRRR

Level 20
DURRD RRLLU LLDRR RRLLL DDRUL URRRD LULLD DRULU RRRLL DDDRU
ULURR RR

Level 21
RDRLL RRRRD DRDLU UURRD LULDD RDLLL L

Level 22
RRDUR RRDLR RLDLU LULDD DDL

Level 23
LDLDR URDDL DRRLU URRUU LDRDL ULDDL DRRRR R

Level 24
LDRRR RRLLU LLDRR RRRRR

Level 25
RDLDR RRURL DDRUL URDLL LLLDD RULUR RRRRR UUULL U

Level 26
RRRDD LRRRD RUUUR

Level 27
RDRRR URDDR RDLUU LDRDL LLLLU URDDD D

Level 28
DLDRU URRRD DLLUD UURRD DDLLU RLUUR RDDLD RRRRR

Level 29
DDRLU URRLU RRDUR DDLLD LDRRR RDRUL LLLUU RDRLL DRRRD RULUR
RU

Level 30
URRDR UURDD DUULL LLDRR RRURD DULLL LLDDR RUDLD RRRRD RULLL
LURRR RRU

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