a-ii aaaa aaab aaac aaai aaap aaar aaba aabb aabc aabi aabp aaca aacb aacc aaci aaco aacp aacr aaib aaic aaii aaoo aapa aapc aapi aapo aara aarc aari aaro aarp abaa abab abac abai abap abar abb- abba abbb abbi abbo abbr abca abcb abcc abci abcp abcr abia abib abic abir aboa abob aboo abor abpa abpc abpi abpp abpr abra abrc abri abro acaa acab acac acai acap acar acba acca accc acci acco accp aci- acia acic acip acir acoa acop acor acpa acpi acpr acr- acra acrc acri acro acrr aiai aiba aibo aica aicc aicp aicr aiia aiib aiic aiir aioc aioi aipa aipi aira airi airo airp aoba aoca aopo aora aorb apac apai apao apap apar apba apbr apca apcb apcc apco apcr api- apia apic apio apip apo- apoc apoo apop apor appa appc appr apra aprc apri apro arab arac arai arap arar arba arbi arc- arca arci arco aria arib arii ario arip aroa arob aroi aroo aror arpa arpi arr- arra arrc arri arro arrr ba-i baaa baar baba babb babi babo babr bac- baca bacc baci baco baia baib baic baio bair bapa bapc bapi bapp bar- bara barb barc bari baro barr bbbb bbci bbpr bbrc bcaa bcap bcar bcbc bcbp bcca bccc bcci bcia bcor bcpp bcra biao biap biar biba bibb bibi bibo bica bicc bici bico bio- bioc bioi bipa bipp bira birb biri biro birr boab boac boai boar boba bobb bobi bobo boca boco boi- boii boob booc boop boor bopa bopp bor- bora bori boro borr bpai bpcp bprc brab brac brai brao brca brcb bria bric brio broa brob broc broo bror brrr c-bo caaa caab caac caap caba cabi cabo cac- caca cacc caci caco cacr caia caib caic caio caip cair caoi caor capa capb capc capi capo capp cara carb carc cari caro carp carr cbac cbar cbbc cbca cbcc cbcp cbcr cbia cbir cbpc cbpp ccaa ccab ccac ccai ccap ccar ccba ccbc ccca cccb cccc ccci cccp ccic ccii ccip ccir ccob ccoc ccpa ccpp ccpr ccra ccrc ccri ccrp ciaa ciao ciar ciba cibc cibi cibo cica cicc cici cico cicr ciia ciii ciob cior cipa cipo cipp cira cirb circ ciri ciro cirr coai coba cobb cobi cobo coca coco cocp coia coip coir coob coop copa copi copo copp copr cor- cora corb corc cori coro corp corr cpaa cpac cpap cpbc cpca cpia cpic cpio cppa cpri crab crac crai crap crar crbc crca crcc crcr cria crib cric crip crob croc croo crop cror crpc iaaa iaac iaai iaap iaba iaca iacc iacp iacr iaia iapa iapp iara iarc ibac ibar ibca ibia ibra ibrc ibri ibro icaa icab icac icai icao icap icar icbc icbp icca iccb iccc icci icco iccp iccr icoc icor icpa icpc icpo icra icrc icrr iiac iica iiii iiio iioi iioo iiop iipa iira iirc ioba iobi ioci iocp ioii ioio iooi iooo iora iori ipac ipba ipca ipcc ipop ippa ippc ippo ippr ipri irac irai irao irap irar irbp irca ircc iri- iria iric irio irip irob iroc irop irpa irpc irra irrc irri oaic oapi oara obai obba obbo obia oboi obor obra obri obro ocab ocac ocap ocbc occa occc occi ocpa ocpp ocra ocro ocrr oiba oici oiii oipc oira ooaa ooba oobi oocr ooia oooo oora opap opar opca opia opic opii opio opo- opor oppa oppi oppo opra orab orac orai orao orar orba orbb orbi orbo orca orci orco ori- oria oric orio oro- oror orpc orpi orra orri orro paap paar paba paca paci paco paia paib paio paip pair paoc papa papb papi papp papr par- para parc pari paro parp parr pbac pbar pbcc pboc pbpa pcaa pcap pcba pcbc pcca pccc pcia pcip pcoa pcpb pcpp pcra pcrc piai piao pibb pibi pica picc pici pico picr piia piip piob pipa pipi pipo pipp pira pirc piri piro pirr poar poba pobo poca poco poia poio poop poor pop- popa popc popi popo popp pora porb porc pori poro porr ppac ppap ppar ppcc ppci ppib ppic ppoa pppa pppo pppp pprc prai prao prar prbc prca prcc prcp pri- pria prii pro- proa prob proc proo prop prri raab raba rabb rabi rabo rac- raca racc raci raco raia raic raii raip rair raob raoc raop rapa rapc rapi rapp rara rarb rari raro rbbb rbbr rcac rcbc rcbo rccb rccc rcic rcpi rcpo riaa riab riai rib- riba ribo rica ricc rico riia ripa ripi ripp ripr riri roab roap roar rob- roba robb robi robo roca rocc roco roia roio roir roob rooi roop roor ropa ropo rora rorc rori roro rpca rpii rpob rrrr