a-ii aaaa aaab aaai aaal aaar aaba aabb aabi aabl aaib aaii aala aali aall aalo aaoo aara aari aaro abaa abab abai abal abar abb- abba abbb abbi abbo abbr abia abib abil abir abla ablo aboa abob abol aboo abor abra abri abro aiai aiba aibl aibo aiia aiib aiir aila aili aioi aira airi airo alaa alai alal alao alar alb- alba albi albo ali- alia alib alii alil alio alir all- alla alli alll allo allr aloa aloi alol aloo alor alro aoba aola aora aorb arab arai aral arar arba arbi aria arib arii aril ario arla arli arlo aroa arob aroi aroo aror arr- arra arri arro arrr ba-i baaa baal baar baba babb babi babo babr baia baib bail baio bair bala bali ball balo baol bar- bara barb bari baro barr bbbb bblb bial biao biar biba bibb bibi bibl bibo bila bili bill bilo bio- bioi biol bira birb biri birl biro birr blaa blab blio blir blob bloo boab boai boal boar boba bobb bobi bobo boi- boii boil bola boli boll bolo boob bool boor bor- bora bori boro borr brab brai brao bria bril brio broa brob brol broo bror brrr iaaa iaai iaal iaba iaia iala iall iara ibar ibia ibra ibri ibro iiii iiio iila iioi iioo iira ilal ilar ilia ilio ilir ill- illa illi illo iloo ioba iobi ioii ioio iola iolo iooi iooo iora iori irai iral irao irar iri- iria iril irio irla irlb irob irra irri laaa laal laar laba labi labo labr laia lail lair lala lali lall lalo lara larb lari larr lbar lbia lblr liao liar liba libo libr liia liii liir lila lilb lili lill lilo lio- lior lira liri lirl liro lirr llao llll lloa lloo loar lob- loba lobb lobi lobo loir lola loli loll lolo loob lool loor lora lori loro lral lrba lroi lrrr oall oara obai obal obba obbo obia obla oboi obol obor obra obri obro oiba oiii oila oira olar olba olbo olia olib olio olla olli ollo olor ooaa ooba oobi ooia oola oolo oooo oora orab orai oral orao orar orba orbb orbi orbo ori- oria oril orio orla orlo oro- oror orra orri orro raab raba rabb rabi rabl rabo raia raii rail rair rala ralb rall ralo raob raol rara rarb rari raro rbbb rbbr riaa riab riai rial rib- riba ribo riia rila rill rilo riol riri rlab roab roar rob- roba robb robi robo roia roil roio roir rola roll rolo roob rooi rool roor rora rori roro rrrr