iiooio illipi illupi iloilo irrour lilipi lilliu lilpop lilpri lilpur liluri lippir lirrop lloro lo-pro lollop loloru looloo loplop loulou lourlo lurulu oooooo oopiri opilio oriolo orroli orrour ouioui oulipo pilili piliol pillor pillou pillur pilolo pilori pilour pilpul piopio pioppi pipili pipilo pipipi pipiri pippip pippul pirili pirrip piupiu pluri- poipoi polio- polipo pollio polloi polpol poluli poluru poopoo pop-up popill popoli popopo poporo poppop populi populo poriol pouoir poupou pourri pppppp priolo priori prioro priour proli- propi- propir propup propur pruili puliol pullip pullup pullur pulpi puriri purloo purpur puruli r-loop ripoli ripoll rolli rollio rollup ruurlo ulloor uppoor upprop uproll uruppu