ALLOPURINOL

ai al an ar in la li lo na no nu oi on op or pa pi un up

ail ain air all alp ani apo ill ion lap lar lin lip loo lop nap nil nip noo nor oar oil ono ora our pal pan par pia pin piu poi pol poo pro pul pun pur rai ran rap ria rin rip run upo urn urp

airn anil aril inro iron lain lair lall lari liar lilo lino lion lipa lira loan loin loll loon loop lorn loup lour lull luna nail naoi nill nipa noil noir nolo nori null nurl olio olla opal oral pail pain pair pall pial pian pill pina pion pirn plan poll polo pool poon poor porn pour prao prau proa pula puli pull puna puri purl rail rain rani rial rill roan roil roll roup ruin ulan ulna unai upon