aop opa coco 4 ee 2 po.
a opoaŏ a aepe oeco ee paoe 4 + 2 e cep + 2 pooe. 1 p (): poo c, * 2 e c epe paoŏ, 2 e, * 2 e c epe paoŏ 2 p (): ce e ee aee pooae a, oop c 1 o 2 p paopa.
op a
