a-a a-b a-c aaa aab aac aag aah aak aan aar ab- aba abb abc abg abh abk abn abr ac- aca acb acc acg ach ack acn acr ag- aga agb agc agg agh agk agn agr aha ahb ahc ahg ahh ahk ahn ahr aka akb akc akg akh akk akn akr an- ana anb anc ang anh ank ann anr ar- ara arb arc arg arh ark arn arr baa bab bac bag bah bak ban bar bba bbb bbc bbg bbh bbk bbn bbr bca bcb bcc bcg bch bck bcn bcr bga bgb bgc bgg bgh bgk bgn bgr bha bhb bhc bhg bhh bhk bhr bka bkb bkc bkg bkk bkn bkr bna bnb bnc bng bnk bnn bnr bra brb brg brh brk brn brr c-- caa cab cac cag cah cak can car cba cbb cbc cbg cbh cbk cbn cbr cca ccb ccc ccg cch cck ccn ccr cga cgb cgc cgg cgh cgn cgr ch- cha chb chc chg chh chk chn chr cka ckb ckc ckh cn- cna cnb cnc cng cnh cnn cnr cra crb crc crg crh crk crn crr gaa gab gac gag gah gak gan gar gba gbc gbg gbh gbk gbn gbr gca gcb gcc gcg gch gck gcn gcr gga ggb ggc ggg ggh ggn ggr gha ghb ghc ghg ghh ghn ghr gka gkb gkh gkn gna gnb gnc gnn gnr gra grb grc grg grh grk grn grr haa hab hac hag hah hak han har hba hbb hbc hbg hbh hbk hbn hbr hca hcb hcc hcg hch hck hcn hcr hga hgb hgc hgg hgh hgk hgn hgr hha hhb hhc hhg hhh hhk hhn hhr hka hkb hkg hkh hkk hkn hkr hna hnb hnc hng hnh hnk hnn hr- hra hrb hrc hrg hrh hrk hrn hrr ka- kaa kab kac kag kah kak kan kar kba kbb kbc kbh kbk kbn kbr kca kcb kcc kcg kch kck kcn kcr kga kgb kgc kgh kha khh khk khn khr kkb kkc kkh kkk kkn kkr kn- kna knc kng knk knn knr kra krc krg krk krn krr naa nab nac nag nah nak nan nar nba nbb nbc nbg nbk nbn nbr nca ncb ncc ncg nch nck ncn ncr nga ngb ngc ngg ngh ngk ngn nha nhb nhc nhg nhh nhk nhn nhr nka nkc nkk nkn nkr nna nnb nnc nng nnh nnk nnn nra nrb nrc nrg nrk nrn nrr ra- raa rab rac rag rah rak ran rar rba rbb rbc rbg rbh rbk rbn rbr rca rcb rcc rcg rch rcn rcr rga rgb rgc rgg rgh rgk rgn rgr rh- rha rhb rhc rhg rhh rhn rhr rkb rkc rkg rkk rna rnb rnc rng rnh rnn rnr rra rrb rrc rrg rrh rrk rrn rrr

-ana a-ak a-ha aaaa aaab aaac aaah aaan aaar aaba aabb aabc aabh aaca aacb aacc aach aack aacn aacr aagh aaha aahk aaka aana aang aara aarc abaa abab abac abag abak aban abar abb- abba abbb abbr abca abcb abcc abch abcn abcr abha abhr abra abrc acaa acab acac acag acan acar acba acca accc acch acga acgr acha achh achr acr- acra acrc acrr agac agag agan agar agba agca agcc agga agha agna agra ahab ahac ahah ahar ahha ahra ahrc ahrr akaa akah akan akar akca akha akka akna akr- akra ana- anaa anab anac anag anah anak anan anar anba anbb anca ancc ang- anga anha ank- anka ankh anna annb anrc arab arac arag arah arak aran arar arba arbh arc- arca arch arga argb argh arh- arka arkh arna arng arnk arr- arra arrc arrg arrh arrk arrr baaa baah baak baan baar baba babb babr bac- baca bacc bach back bacn baga bagg bagh bagn baha bahn bahr bak- baka bakh bakr bana banc bang banh bank bann banr bar- bara barb barc barg barh bark barn barr bbbb bbch bbga bbng bbrc bbrg bcaa bcar bcbc bcbg bcca bccc bcra bgan bgca bhag bhan bhar bhca bhcc bhra bnrr brab brac brag brah brak bran brca brcb brka brkb brna brrr caaa caab caac caah caan caba cabg cac- caca cacc cach cack cacr caga cagg cagn cagr caha cahn caka cana canc cang canh cank cann cara carb carc cark carn carr cbac cbar cbbc cbca cbcc cbcn cbcr cbga cbgb cbha cbka cbkg cbkn cbkr cbna cbrh cbrn ccaa ccab ccac ccag ccar ccba ccbc ccbn ccca cccb cccc ccga ccgc ccha cchr ccna ccnb ccnc ccnr ccra ccrc ccrg cgac cgcc cgcg chaa chab chac chag chah chak chan char chca chch chgb chgn chha chka chkb chnb chnc chnr chra chrb chrc chrn chrr ckac ckan ckbc ckch ckck ckga ckgn cknb cknc ckrc cnaa cnac cnag cnbc cnna cnrc cnrr crab crac crag cran crar crbc crca crcc crcr crkc crna gaar gaba gabb gabr gach gack gaga gagg gaha gahn gana ganc gang gank gann gara garb garg garn garr gbag gban gc-c gcaa gcbc gccc gcna gcrg gggg gghg ggrn ghan ghar gnaa gnac gnar gncc gngc gnrc gnrr grab grac gran grbr grcc grrr haab haag haak haan haar haba hack hag- haga hagg hagh haha hahn haka hakk hana hanc hang hank hann hara harc harh hark harn harr hbag hbar hcbc hcca hccb hccc hcch hcgh hcng hgah hgar hggc hhaa hhgg hhhh hkcc hnna hrac hran hrng hrrc kaaa kaab kaag kaak kaan kaar kaba kabb kabc kabg kabr kacb kacc kach kag- kaga kagb kagc kagg kagh kagr kaha kahc kahn kahr kaka kakc kakh kakk kakn kana kanb kang kanh kann kara karb karg kark karn karr kbaa kbab kbac kbak kbar kbba kbbb kbbc kbbg kbbk kbbr kbca kbcb kbch kbck kbcr kbga kbgb kbgg kbgh kbgn kbgr kbhb kbhc kbhh kbhn kbhr kbkb kbkg kbkk kbkr kbna kbng kbnh kbnn kbnr kbra kbrb kbrc kbrg kbrh