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###@*%/«,.       tetris inducing activites:         .,«/%*@###
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#@*%/«,...   « tetris                               ...,«/%*@#
@*%/«,....   « context free grammars (especially    ....,«/%*@
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%/«,......   « waiting tables                       ......,«/%
/«,.......   « minecraft                            .......,«/
%/«,......   « protoss in star craft brood war      ......,«/%
*%/«,.....   « google maps                          .....,«/%*
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