-ic a-a a-b a-c a-i aaa aab aac aaf aah aai aao aar ab- aba abb abc abf abh abi abo abr ac- aca acb acc acf ach aci aco acr af- afa afb afc aff afh afi afo afr aha ahb ahc ahf ahh ahi aho ahr ai- aia aib aic aif aih aii aio air aoa aob aoc aof aoh aoi aoo aor ar- ara arb arc arf arh ari aro arr baa bab bac baf bah bai bao bar bba bbb bbc bbf bbh bbi bbo bbr bca bcb bcc bcf bch bci bco bcr bfa bfb bfc bff bfh bfi bfo bfr bha bhb bhc bhf bhh bhi bho bhr bi- bia bib bic bif bih bii bio bir boa bob boc bof boh boi boo bor bra brb brf brh bri bro brr c-- caa cab cac caf cah cai cao car cba cbb cbc cbf cbh cbi cbo cbr cca ccb ccc ccf cch cci cco ccr cfa cfb cfc cff cfh cfi cfo cfr ch- cha chb chc chf chh chi cho chr ci- cia cib cic cif cih cii cio cir co- coa cob coc cof coh coi coo cor cra crb crc crf crh cri cro crr faa fab fac faf fah fai fao far fba fbb fbc fbf fbh fbi fbo fbr fca fcb fcc fcf fci fco fcr ffa ffc fff ffh ffi ffo ffr fha fhb fhc fhf fhh fhi fho fhr fia fib fic fif fih fii fir foa fob foc fof foh foi foo for fra frb frc frf frh fri fro frr h-i haa hab hac haf hah hai hao har hba hbb hbc hbf hbh hbi hbo hbr hca hcb hcc hcf hch hci hco hcr hfa hfb hfc hff hfh hfi hfo hfr hha hhb hhc hhf hhh hhi hho hhr hia hib hic hif hih hii hio hir hoa hob hoc hof hoh hoi hoo hor hr- hra hrb hrc hrf hrh hri hro hrr i-f ia- iaa iab iac iaf iah iai iao iar iba ibb ibc ibf ibh ibi ibo ibr ica icb icc icf ich ici ico icr ifa ifb ifc iff ifi ifo ifr iha ihb ihc ihf ihh ihi iho ihr iia iib iic iif iih iii iio iir io- ioa iob ioc iof ioh ioi ioo ior ir- ira irb irc irf iri iro irr o-i oaa oab oac oaf oah oai oao oar ob- oba obb obc obf obh obi obo obr oc- oca ocb occ ocf och oci oco ocr of- ofa ofb ofc off ofi ofo ofr oha ohc ohf ohh ohi oho ohr oia oib oic oif oii oio oir oo- ooa oob ooc oof ooh ooi ooo oor or- ora orb orc orf orh ori oro orr ra- raa rab rac raf rah rai rao rar rba rbb rbc rbf rbh rbi rbo rbr rca rcb rcc rcf rch rci rco rcr rfa rfb rfc rff rfh rfi rfo rfr rh- rha rhb rhc rhf rhh rhi rho rhr ria rib ric rif rih rii rio rir roa rob roc rof roh roi roo ror rra rrb rrc rrf rrh rri rrr

a-ha a-ii aaaa aaab aaac aaaf aaah aaai aaar aaba aabb aabc aabh aabi aaca aacb aacc aacf aach aaci aaco aacr aafa aafb aafc aaff aafi aaha aaib aaic aaii aaoo aara aarc aari aaro abaa abab abac abaf abai abar abb- abba abbb abbi abbo abbr abca abcb abcc abcf abch abci abcr abff abha abhi abho abhr abia abib abic abir aboa abob abof aboh aboo abor abra abrc abri abro acaa acab acac acai acar acba acca accc accf acch acci acco acfc acfi acha achh achi acho achr aci- acia acic acif acir acoa acoh acor acr- acra acrc acri acro acrr afaa afao afar afca afcb afcc afch afci affa affc affi affo afia afib afif afir afoa afoo afor afr- afra afrc afri afro ahab ahac ahah ahai ahar ahfa ahha ahio ahir ahoa ahor ahra ahrc ahrr aiai aiba aibo aica aicc aicf aich aicr aiff aiha aiho aiia aiib aiic aiir aioc aioi aira airh airi airo aoah aoba aoca aora aorb arab arac araf arah arai arar arba arbh arbi arc- arca arch arci arco arfa arfb arfc arff arh- aria arib arif arii ario aroa arob aroi aroo aror arr- arra arrc arrh arri arro arrr ba-i baaa baaf baah baar baba babb babi babo babr bac- baca bacc bach baci baco bafc baff bafo baha bahi baho bahr baia baib baic baio bair baoh bar- bara barb barc barf barh bari baro barr bbbb bbch bbci bbfc bbrc bcaa bcar bcbc bcca bccc bcci bcfc bcia bcof bcor bcra bfca bhai bhao bhar bhca bhcc bhff bhir bhoi bhor bhra biaf biao biar biba bibb bibi bibo bica bicc bich bici bico bifa biff bifi biha bihi bio- bioc bioi bira birb biri biro birr boab boac boai boar boba bobb bobi bobo boca boch boco bofa boff bofh boha boho bohr boi- boii boob booc boof booh boor bor- bora borf borh bori boro borr brab brac braf brah brai brao brca brcb brfc bria bric brih brio broa brob broc broh broo bror brrr c-bo caaa caab caac caaf caah caba cabf cabi cabo cac- caca cacc cach caci caco cacr cafa cafb cafc caff caha caia caib caic caio cair caoi caor cara carb carc carf cari caro carr cbac cbar cbbc cbca cbcc cbcr cbfb cbfc cbha cbia cbir cbrh ccaa ccab ccac ccaf ccai ccar ccba ccbc ccca cccb cccc cccf ccci ccfa ccfc ccff ccfi ccha cchr ccic ccii ccir ccob ccoc ccra ccrc ccrf ccri cfaa cfab cfac cfao cfar cfbc cfbr cfca cfcb cfcf cfco cffb cffr cfia cfoa cfor cfra cfrb chaa chab chac chaf chah chai chao char chca chch chci chfa chfc chfi chfr chha chia chib chic chif chih chir choc choh choi choo chor