Concept of dealing with troubles. Chalk sketch of connecting puzzles with words primary and secondary
Schlüsselwörter
board,
blackboard,
drawing,
puzzle,
primary,
answer,
solving,
learn,
solution,
chalk,
study,
petty,
decision,
search,
question,
university,
concept,
balance,
research,
problem,
secondary,
advice,
vignetting,
college,
brainstorm
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