"0"^^ . . "113909752"^^ . . . . . "a line generated by a point on a circle that rolls around inside another circle"@en-us . . . "hypocycloid"@en-us . "hypocycloid"^^ . . "113121503"@en-us . "13909752-n"^^ . "0"^^ . . "a line generated by a point on a circle that rolls around inside another circle"@en-us .