5m Zen
P q r 2 p
P q r 2 p pictures 5
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P q r
P q r 2 p
p q r 12 p q 2
p 2 qr 2 p r 2 q 2
p 3 p 2 q 2 r 2
pu003d12/qu003d6/ru003d2/p
simplify p q r 2 p q r 2
p q r 2 p q r 2
