Talvez debería tentar con algunhas variantes ortográficas:
"children's digest and children's playmate" » "children's digest and children's plays", "children's digest and children's playhouses", "children's dignity and children's playmate", "children's best and children's playmate", "children's first and children's playmate", "children's digest and children's poetrymate"
"children's art and children's play" » "children's art and children's poetry", "children's early and children's play", "children's _ and children's play", "children's health and children's play"

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