-ic a-a a-b a-c a-i aaa aab aac aai aan aar aau ab- aba abb abc abi abn abr abu ac- aca acb acc aci acn acr acu ai- aia aib aic aii ain air aiu an- ana anb anc ani ann anr anu ar- ara arb arc ari arn arr aru au- aua aub auc aui aun aur b-u baa bab bac bai ban bar bau bba bbb bbc bbi bbn bbr bbu bca bcb bcc bci bcn bcr bcu bi- bia bib bic bii bin bir biu bna bnb bnc bni bnn bnr bnu bra brb bri brn brr bru bua bub buc bui bun bur buu c-- caa cab cac cai can car cau cba cbb cbc cbi cbn cbr cbu cca ccb ccc cci ccn ccr ccu ci- cia cib cic cii cin cir ciu cn- cna cnb cnc cni cnn cnr cnu cra crb crc cri crn crr cru cua cub cuc cui cun cur cuu ia- iaa iab iac iai ian iar iau iba ibb ibc ibi ibn ibr ibu ica icb icc ici icn icr icu iia iib iic iii iin iir iiu in- ina inb inc ini inn inr inu ir- ira irb irc iri irn irr iru iu- iua iub iuc iui iur n-i naa nab nac nai nan nar nau nba nbb nbc nbi nbn nbr nbu nca ncb ncc nci ncn ncr ncu nia nib nic nii nin nir niu nna nnb nnc nni nnn nnu nra nrb nrc nri nrn nrr nru nua nub nuc nui nun nur nuu ra- raa rab rac rai ran rar rau rba rbb rbc rbi rbn rbr rbu rca rcb rcc rci rcn rcr rcu ria rib ric rii rin rir rna rnb rnc rni rnn rnr rnu rra rrb rrc rri rrn rrr rru rua rub ruc rui run rur ruu ua- uaa uab uac uai uan uar uau uba ubb ubc ubi ubn ubr ubu uca ucb ucc uci ucn ucr ucu uia uib uic uii uin uir uiu un- una unb unc uni unn unr unu ur- ura urb urc uri urn urr uru uua uuc uun uur uuu

-ana a-ii a-un aaaa aaab aaac aaai aaan aaar aaba aabb aabc aabi aaca aacb aacc aaci aacn aacr aacu aaib aaic aaii aain aana aani aara aarc aari aaru abaa abab abac abai aban abar abau abb- abba abbb abbi abbr abca abcb abcc abci abcn abcr abia abib abic abin abir abiu abnu abra abrc abri abua abun acaa acab acac acai acan acar acba acca accc acci accu aci- acia acic acin acir acr- acra acrc acri acrr acu- acur aiai aian aiba aibn aica aicc aicr aiia aiib aiic aiin aiir aina ainc aini ainu aira airi aiui ana- anaa anab anac anai anan anar anau anba anbb anbi anbu anca ancc ania anib anic anin anir aniu anna annb anni anrc anri anua anub anui anun arab arac arai aran arar arau arba arbi arc- arca arci aria arib arii arin arna arni arr- arra arrc arri arrr arru arua arub arui arun auaa auca auci auna aur- aura auri ba-i baaa baan baar baba babb babi babr babu bac- baca bacc baci bacn baia baib baic bain bair bana banc bani bann banr banu bar- bara barb barc bari barn barr baru bau- baur bbau bbbb bbci bbin bbrc bcaa bcar bcbc bcca bccc bcci bcia bcnu bcra bcru bcuc bian biar biba bibb bibi bica bicc bici biin bin- bina binc bini binn binu bira birb biri birn birr biru bnai bnib bnin bnrr brab brac brai bran brau brca brcb bria bric brin brna brrr bruc brun buar buba bubb bubi bubu buca bucc buci bucu buic buin buir buiu buna bunb buni bunn bunu bur- bura burb buri burn burr buru caaa caab caac caan caba cabi cabu cac- caca cacc caci cacr caia caib caic cain cair caiu cana canc cani cann cara carb carc cari carn carr cauc cbac cbar cbbc cbca cbcc cbcn cbcr cbcu cbia cbir cbna cbrn ccaa ccab ccac ccai ccar ccba ccbc ccbn ccca cccb cccc ccci cccu ccic ccii ccir ccna ccnb ccnc ccni ccnr ccnu ccra ccrc ccri ccuc ciaa cian ciar ciau ciba cibc cibi cica cicc cici cicr cicu ciia ciii cin- cina cinc cini cira cirb circ ciri cirr ciuc cnaa cnac cnbc cnci cnib cnic cnna cnrc cnrr crab crac crai cran crar crau crbc crbu crca crcc crcr cria crib cric crin criu crna crub crun cuan cuau cub- cuba cubb cubi cuca cucc cuci cucn cui- cuin cuir cuna cura curb curi curn curr iaaa iaac iaai iaba iaca iacc iacr iacu iaia iain iana iara iarc iaru ibac iban ibar ibca ibia ibra ibrc ibri icaa icab icac icai ican icar icbc icca iccb iccc icci iccn iccr iccu icnb icnc icra icrc icrr icru icub iiac iica iiii iira iirc iiuc inab inac inai inan inar inau inba inca incb inci incr inia inna inni innr innu inra inri inua inui inun irac irai iran irar irca ircc ircu iri- iria iric irin irna irra irrc irri irun iucc iuiu iura n-ii naaa naab naac naai naan naar naba nabc nabi nabu naca nacc naci naia naib naic nain nair nan- nana nanb nani nann nanu nara narc nari narn narr naru naur nbaa nbar nbbc nbca nbcc nbci nbia nbic ncaa ncac ncar ncba ncbc ncbi ncca nccc ncci nccn nccr nccu ncia ncna ncnc ncra ncrc ncri ncua niab niac nian niau nibi nica nicc nici nicu niia niir niiu nina nini nira niru niur nnnn nrab nrca nric nrna nrrc nuan nuba nubc nubi nuca nuci nucu nuin nuna nunc nunn nura nurc nuri nurn nurr nuru raab raan raba rabb rabi rabu rac- raca racc raci racu raia raic raii rain rair raiu rana ranc rani rann rara rarb rari raua raub rauc raun rbbb rbbr rcac rcbc rccb rccc