Solution - Lösung
     
FF'FDRF'R'
FF'F
RF'R'FF'RFR'R'B'DBR
URU'R'FR'F'RU'L'ULF'LFL'
RU'L'UR'U'LURU'L'UR'U'LU
RF'R'FUU'U
F'RFR'UU'U
R'E'RER'URERERU'
  R'E'RER'URERERU'
  R'E'RER'U
W->N N->O O->WFUM'UMUF
  W->N N->O O->WFU'M'UMU'F
  FUM'UMUFexecute only once: / führe nur einmal aus:Uexecute only once: / führe nur einmal aus:U'
  FUM'UMUFexecute only once: / führe nur einmal aus:U'execute only once: / führe nur einmal aus:U