-ic a-a a-b a-c a-i aaa aab aac aai aan aao aar ab- aba abb abc abi abn abo abr ac- aca acb acc aci acn aco acr ai- aia aib aic aii ain aio air an- ana anb anc ani ann ano anr aoa aob aoc aoi aon aoo aor ar- ara arb arc ari arn aro arr baa bab bac bai ban bao bar bba bbb bbc bbi bbn bbo bbr bca bcb bcc bci bcn bco bcr bi- bia bib bic bii bin bio bir bna bnb bnc bni bnn bno bnr boa bob boc boi bon boo bor bra brb bri brn bro brr c-- caa cab cac cai can cao car cba cbb cbc cbi cbn cbo cbr cca ccb ccc cci ccn cco ccr ci- cia cib cic cii cin cio cir cn- cna cnb cnc cni cnn cno cnr co- coa cob coc coi con coo cor cra crb crc cri crn cro crr ia- iaa iab iac iai ian iao iar iba ibb ibc ibi ibn ibo ibr ica icb icc ici icn ico icr iia iib iic iii iin iio iir in- ina inb inc ini inn ino inr io- ioa iob ioc ioi ion ioo ior ir- ira irb irc iri irn iro irr n-i naa nab nac nai nan nao nar nba nbb nbc nbi nbn nbo nbr nca ncb ncc nci ncn nco ncr nia nib nic nii nin nio nir nna nnb nnc nni nnn nno no- noa nob noc noi non noo nor nra nrb nrc nri nrn nro nrr o-i oaa oab oac oai oan oao oar ob- oba obb obc obi obn obo obr oc- oca ocb occ oci ocn oco ocr oia oib oic oii oin oio oir on- ona onb onc oni onn ono onr oo- ooa oob ooc ooi oon ooo oor or- ora orb orc ori orn oro orr ra- raa rab rac rai ran rao rar rba rbb rbc rbi rbn rbo rbr rca rcb rcc rci rcn rco rcr ria rib ric rii rin rio rir rna rnb rnc rni rnn rno rnr roa rob roc roi ron roo ror rra rrb rrc rri rrn rrr

-ana a-ii aaaa aaab aaac aaai aaan aaar aaba aabb aabc aabi aaca aacb aacc aaci aacn aaco aacr aaib aaic aaii aain aana aani aaon aaoo aara aarc aari aaro abaa abab abac abai aban abar abb- abba abbb abbi abbo abbr abca abcb abcc abci abcn abcr abia abib abic abin abir aboa abob abon aboo abor abra abrc abri abro acaa acab acac acai acan acar acba acca accc acci acco aci- acia acic acin acir acoa acon acor acr- acra acrc acri acro acrr aiai aian aiba aibn aibo aica aicc aicr aiia aiib aiic aiin aiir aina ainc aini aino aioc aioi aion aira airi airo ana- anaa anab anac anai anan anao anar anba anbb anbi anbo anca ancc anco ania anib anic anin anio anir anna annb anni anno ano- anoa anon anor anrc anri aoba aoca aonb aono aora aorb aorn arab arac arai aran arar arba arbi arc- arca arci arco aria arib arii arin ario arna arni arno aroa arob aroi aron aroo aror arr- arra arrc arri arro arrr ba-i baaa baan baar baba babb babi babo babr bac- baca bacc baci bacn baco baia baib baic bain baio bair bana banc bani bann bano banr baon bar- bara barb barc bari barn baro barr bbbb bbci bbin bbrc bcaa bcar bcbc bcca bccc bcci bcia bcor bcra bian biao biar biba bibb bibi bibo bica bicc bici bico biin bin- bina binc bini binn bino bio- bioc bioi bion bira birb biri birn biro birr bnai bnib bnin bnoc bnor bnrr boab boac boai boan boar boba bobb bobi bobo boca boco boi- boii boin bona bonc boni bonn bono boob booc boon boor bor- bora bori born boro borr brab brac brai bran brao brca brcb bria bric brin brio brna brno broa brob broc bron broo bror brrr c-bo caaa caab caac caan caba cabi cabo cac- caca cacc caci caco cacr caia caib caic cain caio cair cana canc cani cann cano caoi caor cara carb carc cari carn caro carr cbac cbar cbbc cbca cbcc cbcn cbcr cbia cbir cbna cbrn ccaa ccab ccac ccai ccar ccba ccbc ccbn ccca cccb cccc ccci ccic ccii ccir ccna ccnb ccnc ccni ccnr ccob ccoc ccra ccrc ccri ciaa cian ciao ciar ciba cibc cibi cibo cica cicc cici cico cicr ciia ciii cin- cina cinc cini cino ciob cion cior cira cirb circ ciri ciro cirr cnaa cnac cnbc cnci cnco cnib cnic cnna cnrc cnrr coai coan coba cobb cobi cobo coca coco coia coin coir con- cona conc coni conn cono coob coon cor- cora corb corc cori corn coro corr crab crac crai cran crar crbc crca crcc crcr cria crib cric crin crna crob croc cron croo cror i-no iaaa iaac iaai iaba iaca iacc iacr iaia iain iana iara iarc ibac iban ibar ibca ibia ibon ibra ibrc ibri ibro icaa icab icac icai ican icao icar icbc icca iccb iccc icci iccn icco iccr icnb icnc icoc icon icor icra icrc icrr iiac iica iiii iiio iino iioi iioo iira iirc inab inac inai inan inao inar inba inbo inca incb inci inco incr inia inna inni inno innr ino- inoi inon inor inra inri inro ioan ioba iobi ioci ioii ioio iona ioni ionn iono iooi iooo iora iori irac irai iran irao irar irca ircc iri- iria iric irin irio irna irob iroc iron irra irrc irri n-ii naaa naab naac naai naan naar naba nabc nabi nabo naca nacc naci naco naia naib naic nain naio nair nan- nana nanb nani nann nano naoc naoi naor nara narc nari narn naro narr nbaa nbar nbbc nbbo nbca nbcc nbci nbco nbia nbic ncaa ncac ncar ncba ncbc ncbi