Ключевые слова: activity, answers, awareness, black, blank, box, brain, challenge, close, column, complexity, crossing, crossword, cultures, document, empty, entertainment, game, hobby, incomplete, instrument, intelligent, knowledgebase, leisure, mesh, newspaper, nobody, number, paper, pastime, pattern, pencil, people, puzzle, questions, quick, row, simplicity, square, summer, telegraph, textures, training, white, word, writing,