-ic a-a a-b a-c a-i aaa aab aac aai aao aar aau ab- aba abb abc abi abo abr abu ac- aca acb acc aci aco acr acu ai- aia aib aic aii aio air aiu aoa aob aoc aoi aoo aor aou ar- ara arb arc ari aro arr aru au- aua aub auc aui auo aur b-u baa bab bac bai bao bar bau bba bbb bbc bbi bbo bbr bbu bca bcb bcc bci bco bcr bcu bi- bia bib bic bii bio bir biu boa bob boc boi boo bor bou bra brb bri bro brr bru bua bub buc bui buo bur buu c-- caa cab cac cai cao car cau cba cbb cbc cbi cbo cbr cbu cca ccb ccc cci cco ccr ccu ci- cia cib cic cii cio cir ciu co- coa cob coc coi coo cor cou cra crb crc cri cro crr cru cua cub cuc cui cuo cur cuu ia- iaa iab iac iai iao iar iau iba ibb ibc ibi ibo ibr ibu ica icb icc ici ico icr icu iia iib iic iii iio iir iiu io- ioa iob ioc ioi ioo ior iou ir- ira irb irc iri iro irr iru iu- iua iub iuc iui iur o-i oaa oab oac oai oao oar oau ob- oba obb obc obi obo obr obu oc- oca ocb occ oci oco ocr ocu oia oib oic oii oio oir oiu oo- ooa oob ooc ooi ooo oor or- ora orb orc ori oro orr oru ou- oua ouc oui ouo our ra- raa rab rac rai rao rar rau rba rbb rbc rbi rbo rbr rbu rca rcb rcc rci rco rcr rcu ria rib ric rii rio rir roa rob roc roi roo ror rou rra rrb rrc rri rrr rru rua rub ruc rui ruo rur ruu ua- uaa uab uac uai uao uar uau uba ubb ubc ubi ubo ubr ubu uca ucb ucc uci uco ucr ucu uia uib uic uii uio uir uiu uoa uob uoc uoo uor ur- ura urb urc uri uro urr uru uua uuc uur uuu

a-ii aaaa aaab aaac aaai aaar aaba aabb aabc aabi aaca aacb aacc aaci aaco aacr aacu aaib aaic aaii aaoo aara aarc aari aaro aaru abaa abab abac abai abar abau abb- abba abbb abbi abbo abbr abca abcb abcc abci abcr abia abib abic abir abiu aboa abob aboo abor abou abra abrc abri abro abua acaa acab acac acai acar acba acca accc acci acco accu aci- acia acic acir acoa acor acou acr- acra acrc acri acro acrr acu- acuo acur aiai aiba aibo aica aicc aicr aiia aiib aiic aiir aioc aioi aira airi airo aiui aoba aoca aora aorb arab arac arai arar arau arba arbi arc- arca arci arco aria arib arii ario aroa arob aroi aroo aror arr- arra arrc arri arro arrr arru arua arub arui auaa auca auci aur- aura auri auro ba-i baaa baar baba babb babi babo babr babu bac- baca bacc baci baco baia baib baic baio bair bar- bara barb barc bari baro barr baru bau- baur bbau bbbb bbci bbrc bcaa bcar bcbc bcca bccc bcci bcia bcor bcra bcru bcuc biao biar biba bibb bibi bibo bica bicc bici bico bio- bioc bioi biou bira birb biri biro birr biru boab boac boai boar boba bobb bobi bobo bobu boca boco bocu boi- boii boiu boob booc boor bor- bora bori boro borr boru boua bour brab brac brai brao brau brca brcb bria bric brio broa brob broc broo bror brou brrr bruc buar buba bubb bubi bubo bubu buca bucc buci buco bucu buic buir buiu bur- bura burb buri buro burr buru c-bo caaa caab caac caba cabi cabo cabu cac- caca cacc caci caco cacr caia caib caic caio cair caiu caoi caor cara carb carc cari caro carr cauc cauo cbac cbar cbbc cbca cbcc cbcr cbcu cbia cbir ccaa ccab ccac ccai ccar ccba ccbc ccca cccb cccc ccci cccu ccic ccii ccir ccob ccoc ccra ccrc ccri ccuc ciaa ciao ciar ciau ciba cibc cibi cibo cica cicc cici cico cicr cicu ciia ciii ciob cior cira cirb circ ciri ciro cirr ciuc coai coba cobb cobi cobo cobu coca coco cocu coia coir coob cor- cora corb corc cori coro corr coua coub cour crab crac crai crar crau crbc crbu crca crcc crcr cria crib cric criu crob croc croo cror crub cuau cub- cuba cubb cubi cuca cucc cuci cui- cuir cura curb curi curo curr iaaa iaac iaai iaba iaca iacc iacr iacu iaia iara iarc iaru ibac ibar ibca ibia ibra ibrc ibri ibro icaa icab icac icai icao icar icbc icca iccb iccc icci icco iccr iccu icoc icor icra icrc icrr icru icub iiac iica iiii iiio iioi iioo iira iirc iiuc ioba iobi ioci ioii ioio iooi iooo iora iori irac irai irao irar irca ircc ircu iri- iria iric irio irob iroc irra irrc irri iucc iuiu iura oaau oaic oara obai obba obbo obia oboi obor obra obri obro ocab ocac ocbc occa occc occi ocra ocro ocrr ocur oiba oici oiii oira ooaa ooba oobi oocr ooia oooo oora orab orac orai orao orar orba orbb orbi orbo orbu orca orci orco ori- oria oric orio oro- oror orra orri orro orub ouac oucc ouii ouir our- oura ouro ouu- raab raba rabb rabi rabo rabu rac- raca racc raci raco racu raia raic raii rair raiu raob raoc rara rarb rari raro raua raub rauc rbbb rbbr rcac rcbc rcbo rccb rccc rcic riaa riab riai riau rib- riba ribo ribu rica ricc rico riia riou riri roab roar rob- roba robb robi robo robu roca rocc roco roia roio roir roiu roob rooi roor rora rorc rori roro roru roua roub rrrr ruba rubb rubi rubu ruca ruci rura rurc ruri ruro ruru uabc uaca uair uaoc