a-a a-b aaa aab aaf aak aan aao aap aar ab- aba abb abf abk abn abo abp abr af- afa afb aff afk afn afo afp afr aka akb akk akn ako akp akr an- ana anb anf ank ann ano anp anr aoa aob aof aok aon aoo aop aor ap- apa apb apf apk apn apo app apr ar- ara arb arf ark arn aro arp arr b-p baa bab baf bak ban bao bap bar bba bbb bbf bbk bbn bbo bbp bbr bfa bfb bff bfn bfo bfp bfr bka bkb bkf bkk bkn bko bkp bkr bna bnb bnf bnk bnn bno bnp bnr boa bob bof bok bon boo bop bor bpa bpb bpf bpn bpo bpp bpr bra brb brf brk brn bro brp brr faa fab faf fak fan fao fap far fba fbb fbf fbk fbn fbo fbp fbr ffa fff ffk ffn ffo ffp ffr fka fkb fkf fkk fkp fna fnb fnf fnk fnn fnp fnr foa fob fof fok fon foo fop for fpa fpb fpk fpn fpo fpp fpr fra frb frf frk frn fro frp frr ka- kaa kab kaf kak kan kao kap kar kba kbb kbf kbk kbn kbo kbp kbr kfa kff kfo kkb kkk kkn kkp kkr kn- kna knf knk knn kno knp knr koa kob kof kok kon koo kop kor kpa kpf kpk kpn kpo kpp kpr kra krf krk krn kro krp krr naa nab naf nak nan nao nap nar nba nbb nbf nbk nbn nbo nbp nbr nfa nfb nff nfk nfn nfo nfp nfr nka nkf nkk nkn nko nkp nkr nna nnb nnf nnk nnn nno nnp no- noa nob nof nok non noo nop nor npa npb npf npn npo npp npr nra nrb nrf nrk nrn nro nrp nrr oaa oab oaf oak oan oao oap oar ob- oba obb obf obk obn obo obp obr of- ofa ofb off ofn ofo ofp ofr oka okb okk oko okp okr on- ona onb onf onk onn ono onp onr oo- ooa oob oof ook oon ooo oop oor op- opa opb opf opk opn opo opp opr or- ora orb orf ork orn oro orp orr p-p paa pab paf pak pan pao pap par pba pbb pbf pbk pbn pbo pbp pbr pfa pfb pff pfk pfn pfo pfp pfr pka pkb pkf pkn pko pkp pkr pn- pna pnb pnf pnk pnn pno pnp pnr poa pob pof pok pon poo pop por ppa ppb ppf ppk ppn ppo ppp ppr pra prb prf prk prn pro prp prr ra- raa rab raf rak ran rao rap rar rba rbb rbf rbk rbn rbo rbp rbr rfa rfb rff rfk rfn rfo rfp rfr rkb rkf rkk rko rkp rna rnb rnn rno rnp rnr roa rob rof rok ron roo rop ror rpa rpb rpf rpk rpn rpo rpp rpr rra rrb rrf rrk rrn rrp rrr

-ana a-ak a-ok aaaa aaab aaaf aaan aaap aaar aaba aabb aabp aafa aafb aaff aaka aana aanp aaon aaoo aapa aapo aara aaro aarp abaa abab abaf abak aban abap abar abb- abba abbb abbo abbr abff aboa abob abof abok abon aboo abor abpa abpn abpp abpr abra abro afaa afak afan afao afap afar affa affo afka afkr afoa afoo afor afpa afr- afra afro akaa akan akao akap akar akka akko akna akok akon akpo akr- akra ana- anaa anab anak anan anao anap anar anba anbb anbo anfa anfo ank- anka anko anna annb anno ano- anoa anon anor anp- anpa anpp anpr aoba aokp aonb aono aopo aora aorb aorn apak apan apao apap apar apba apbr apfa apfo apna apno apo- apof apon apoo apop apor appa appr apra aprn apro arab araf arak aran arap arar arba arfa arfb arff arka arko arna arnk arno aroa arob aron aroo aror arpa arr- arra arrk arro arrr baaa baaf baak baan baar baba babb babo babr baff bafo bak- baka bako bakr bana bank bann bano banp banr baon bapa bapp bar- bara barb barf bark barn baro barr bbbb bbfn bbpr bfpo bfpp bkpr bnor bnpp bnrr boab boak boan boar boba bobb bobo bofa boff boka bokn boko bona bonk bonn bono boob boof book boon boop boor bopa bopp bor- bora borf bork born boro borr brab braf brak bran brao brka brkb brna brno broa brob brok bron broo bror brrr f--k faaa faan faap faba fabo fafa faff fafo fako fana fank fano faon fapa fapp fara farb fark faro farp farr fbar fbop ffar ffff ffrr fkab fkbp fnar foaf foak foan foar foba fofo fono foof fook foon fopp for- fora forb fork forn foro forr fpaa fpra fprf frab frak fran frap frob fron frop kaaa kaab kaaf kaak kaan kaap kaar kaba kabb kabf kabo kabr kafa kaff kafn kafp kafr kaka kakk kakn kako kana kanb kanf kann kano kanp kaoa kaok kaon kaor kap- kapa kapf kapn kapo kapp kara karb karf kark karn karo karp karr kbaa kbab kbak kbap kbar kbba kbbb kbbf kbbk kbbo kbbr kbfb kbff kbfk kbfo kbfp kbfr kbkb kbkf kbkk kbko kbkr kbna kbnn kbno kbnp kbnr kboa kbob kbok kbon kboo kbpa kbpk kbpn kbpo kbpr kbra kbrb kbrf kbrk kbrn kbro kfab kfan kfar kfbk kfbn kffa kffb kfff kffk kffn kfka kfkb kfna kfnf kfnk kfnn kfno kfok kfon kfoo kfor kfpr kfra kfrn kfro kfrp kfrr kkaa kkan kkap kkar kkba kkbb kkbn kkbo kkbr kkfn kkfr kkkk kknb kknn kkno kkoa kkob kkon kkoo kkor kkpk kkpn kkrb kkrf kkrk kkrn kkro kkrr knaa knab knaf knan knap knar knba knbb knbn knbr knfa knfo knfr knkk knnb knnk knnr knob knok knon knop knor knpa knpb knpr knrb knrk knro koab koak koan koap koar koba kobb kobk kobn kobo kobr kofa koff kofk kofo kofp koka kokb kokf kokk