-ic a-a a-b a-c a-i aaa aab aac aaf aai aan aar ab- aba abb abc abf abi abn abr ac- aca acb acc acf aci acn acr af- afa afb afc aff afi afn afr ai- aia aib aic aif aii ain air an- ana anb anc anf ani ann anr ar- ara arb arc arf ari arn arr baa bab bac baf bai ban bar bba bbb bbc bbf bbi bbn bbr bca bcb bcc bcf bci bcn bcr bfa bfb bfc bff bfi bfn bfr bi- bia bib bic bif bii bin bir bna bnb bnc bnf bni bnn bnr bra brb brf bri brn brr c-- caa cab cac caf cai can car cba cbb cbc cbf cbi cbn cbr cca ccb ccc ccf cci ccn ccr cfa cfb cfc cff cfi cfn cfr ci- cia cib cic cif cii cin cir cn- cna cnb cnc cnf cni cnn cnr cra crb crc crf cri crn crr faa fab fac faf fai fan far fba fbb fbc fbf fbi fbn fbr fca fcb fcc fcf fci fcn fcr ffa ffc fff ffi ffn ffr fia fib fic fif fii fin fir fna fnb fnc fnf fni fnn fnr fra frb frc frf fri frn frr i-f ia- iaa iab iac iaf iai ian iar iba ibb ibc ibf ibi ibn ibr ica icb icc icf ici icn icr ifa ifb ifc iff ifi ifn ifr iia iib iic iif iii iin iir in- ina inb inc inf ini inn inr ir- ira irb irc irf iri irn irr n-i naa nab nac naf nai nan nar nba nbb nbc nbf nbi nbn nbr nca ncb ncc ncf nci ncn ncr nfa nfb nfc nff nfi nfn nfr nia nib nic nif nii nin nir nna nnb nnc nnf nni nnn nra nrb nrc nrf nri nrn nrr ra- raa rab rac raf rai ran rar rba rbb rbc rbf rbi rbn rbr rca rcb rcc rcf rci rcn rcr rfa rfb rfc rff rfi rfn rfr ria rib ric rif rii rin rir rna rnb rnc rni rnn rnr rra rrb rrc rrf rri rrn rrr

-ana a-ii aaaa aaab aaac aaaf aaai aaan aaar aaba aabb aabc aabi aaca aacb aacc aacf aaci aacn aacr aafa aafb aafc aaff aafi aaib aaic aaii aain aana aani aara aarc aari abaa abab abac abaf abai aban abar abb- abba abbb abbi abbr abca abcb abcc abcf abci abcn abcr abff abia abib abic abin abir abra abrc abri acaa acab acac acai acan acar acba acca accc accf acci acfc acfi aci- acia acic acif acin acir acr- acra acrc acri acrr afaa afan afar afca afcb afcc afci affa affc affi afia afib afif afin afir afr- afra afrc afri aiai aian aiba aibn aica aicc aicf aicr aiff aiia aiib aiic aiin aiir aina ainc aini aira airi ana- anaa anab anac anai anan anar anba anbb anbi anca ancc anfa ania anib anic anif anin anir anna annb anni anrc anri arab arac araf arai aran arar arba arbi arc- arca arci arfa arfb arfc arff aria arib arif arii arin arna arni arr- arra arrc arri arrr ba-i baaa baaf baan baar baba babb babi babr bac- baca bacc baci bacn bafc baff baia baib baic bain bair bana banc bani bann banr bar- bara barb barc barf bari barn barr bbbb bbci bbfc bbfn bbin bbrc bcaa bcar bcbc bcca bccc bcci bcfc bcia bcra bfca biaf bian biar biba bibb bibi bica bicc bici bifa biff bifi biin bin- bina binc bini binn bira birb biri birn birr bnai bnib bnin bnrr brab brac braf brai bran brca brcb brfc bria bric brin brna brrr caaa caab caac caaf caan caba cabf cabi cac- caca cacc caci cacr cafa cafb cafc caff caia caib caic cain cair cana canc cani cann cara carb carc carf cari carn carr cbac cbar cbbc cbca cbcc cbcn cbcr cbfb cbfc cbia cbir cbna cbrn ccaa ccab ccac ccaf ccai ccar ccba ccbc ccbn ccca cccb cccc cccf ccci ccfa ccfc ccff ccfi ccic ccii ccir ccna ccnb ccnc ccnf ccni ccnr ccra ccrc ccrf ccri cfaa cfab cfac cfar cfbc cfbn cfbr cfca cfcb cfcf cfcn cffb cffr cfia cfnb cfni cfnr cfra cfrb cfrn ciaa cian ciar ciba cibc cibi cica cicc cici cicr cifa ciff ciia ciii cin- cina cinc cinf cini cira cirb circ ciri cirr cnaa cnac cnbc cnci cnfa cnib cnic cnna cnrc cnrr crab crac craf crai cran crar crbc crca crcc crcr crfc cria crib cric crif crin crna faaa faac faan faba fabi faca facc fafa fafc faff fafi fain fair fana fanc fani fara farb farc farr fbar fcab fcar fcba fcca fccf fcic fcii fcra ffar ffcc ffff ffii ffrr fiaa fiac fiaf fian fiar fiba fica ficc fifa fifc fiff fifi fiii fina fini finn fira firn fnac fnar fnci frab frac fran frbc frcc frcn frfc fria frib fric frin iaaa iaac iaai iaba iaca iacc iacr iafc iaff iaia iain iana iara iarc ibac iban ibar ibca ibfi ibia ibra ibrc ibri icaa icab icac icaf icai ican icar icbc icca iccb iccc iccf icci iccn iccr icfb icnb icnc icra icrc icrf icrr ifaa ifac ifan ifar ifbb ific ifni ifnr ifra ifrb ifrf ifri iiac iica iifa iiii iira iirc inab inac inaf inai inan inar inba inca incb inci incr infa infi inia inna inni innr inra inri irac iraf irai iran irar irca ircc iri- iria iric irin irna irra irrc irri n-ii naaa naab naac naai naan naar naba nabc nabf nabi naca nacc nacf naci nafa nafc naff nafi naia naib naic naif nain nair nan- nana nanb nani nann nara narc narf nari narn narr nbaa nbaf nbar nbbc nbca nbcc nbci nbfa nbfc nbia nbic ncaa ncac ncar ncba ncbc ncbi ncca nccc nccf ncci nccn nccr ncfc ncia ncna ncnc ncra