a-wa aaaa aaap aaar aaoo aaow aapa aapo aara aaro aarp aaww aopo aora apao apap apar apaw apo- apoo apop apor appa appr apra apro apwa arap arar araw aroa aroo aror arow arpa arr- arra arro arrr arwa awar awoo awow awpp awro awwa oara ooaa oooo oora opap opar opo- opor oppa oppo opra orao orar oro- oror orra orro orwa orwo owar owow owwa paap paar papa papp papr par- para paro parp parr pawa pawo pawr poar poop poor pop- popa popo popp pora poro porr powa powp powr ppap ppar ppoa pppa pppo pppp prao prar praw pro- proa proo prop prow pwaa raop rapa rapp rara raro rawa rawr raww roap roar roop roor ropa ropo rora roro rowa rowp rowr roww rrrr waaa waao waar waaw waoo waor waow wapa wapo wapp wapr wapw war- wara waro warp warr warw wawa wawo woaa woap woar woop woow wopp wora woro worp worr worw wowo wowp woww wpaa wpap wpar wpaw wpoa wpop wpor wpow wppa wppr wpra wpro wprp wprr wpwa wraa wrao wrap wrar wraw wroa wroo wrop wrow wrpa wrpp wrpr wrpw wrra wrro wrrw wrwa wrwr wwor wwow wwpa wwpr wwpw wwra wwrr wwrw wwwa wwwr wwww