a-a a-b aaa aab aak aan aao aap aar ab- aba abb abk abn abo abp abr aka akb akk akn ako akp akr an- ana anb ank ann ano anp anr aoa aob aok aon aoo aop aor ap- apa apb apk apn apo app apr ar- ara arb ark arn aro arp arr b-p baa bab bak ban bao bap bar bba bbb bbk bbn bbo bbp bbr bka bkb bkk bkn bko bkp bkr bna bnb bnk bnn bno bnp bnr boa bob bok bon boo bop bor bpa bpb bpn bpo bpp bpr bra brb brk brn bro brp brr ka- kaa kab kak kan kao kap kar kba kbb kbk kbn kbo kbp kbr kkb kkk kkn kkp kkr kn- kna knk knn kno knp knr koa kob kok kon koo kop kor kpa kpk kpn kpo kpp kpr kra krk krn kro krp krr naa nab nak nan nao nap nar nba nbb nbk nbn nbo nbp nbr nka nkk nkn nko nkp nkr nna nnb nnk nnn nno nnp no- noa nob nok non noo nop nor npa npb npn npo npp npr nra nrb nrk nrn nro nrp nrr oaa oab oak oan oao oap oar ob- oba obb obk obn obo obp obr oka okb okk oko okp okr on- ona onb onk onn ono onp onr oo- ooa oob ook oon ooo oop oor op- opa opb opk opn opo opp opr or- ora orb ork orn oro orp orr p-p paa pab pak pan pao pap par pba pbb pbk pbn pbo pbp pbr pka pkb pkn pko pkp pkr pn- pna pnb pnk pnn pno pnp pnr poa pob pok pon poo pop por ppa ppb ppk ppn ppo ppp ppr pra prb prk prn pro prp prr ra- raa rab rak ran rao rap rar rba rbb rbk rbn rbo rbp rbr rkb rkk rko rkp rna rnb rnn rno rnp rnr roa rob rok ron roo rop ror rpa rpb rpk rpn rpo rpp rpr rra rrb rrk rrn rrp rrr

-ana a-ak a-ok aaaa aaab aaan aaap aaar aaba aabb aabp aaka aana aanp aaon aaoo aapa aapo aara aaro aarp abaa abab abak aban abap abar abb- abba abbb abbo abbr aboa abob abok abon aboo abor abpa abpn abpp abpr abra abro akaa akan akao akap akar akka akko akna akok akon akpo akr- akra ana- anaa anab anak anan anao anap anar anba anbb anbo 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 apna apno apo- apon apoo apop apor appa appr apra aprn apro arab arak aran arap arar arba arka arko arna arnk arno aroa arob aron aroo aror arpa arr- arra arrk arro arrr baaa baak baan baar baba babb babo babr bak- baka bako bakr bana bank bann bano banp banr baon bapa bapp bar- bara barb bark barn baro barr bbbb bbpr bkpr bnor bnpp bnrr boab boak boan boar boba bobb bobo boka bokn boko bona bonk bonn bono boob book boon boop boor bopa bopp bor- bora bork born boro borr brab brak bran brao brka brkb brna brno broa brob brok bron broo bror brrr kaaa kaab kaak kaan kaap kaar kaba kabb kabo kabr kaka kakk kakn kako kana kanb kann kano kanp kaoa kaok kaon kaor kap- kapa kapn kapo kapp kara karb kark karn karo karp karr kbaa kbab kbak kbap kbar kbba kbbb kbbk kbbo kbbr kbkb kbkk kbko kbkr kbna kbnn kbno kbnp kbnr kboa kbob kbok kbon kboo kbpa kbpk kbpn kbpo kbpr kbra kbrb kbrk kbrn kbro kkaa kkan kkap kkar kkba kkbb kkbn kkbo kkbr kkkk kknb kknn kkno kkoa kkob kkon kkoo kkor kkpk kkpn kkrb kkrk kkrn kkro kkrr knaa knab knan knap knar knba knbb knbn knbr 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 koka kokb kokk kokn koko kokp kokr kona konk kono konp koob kook koon kooo koop koor kopa kopb kopn kopp kopr kora korb kork korn koro korr kpak kpan kpao kpar kpba kpbb kpbr kpkk kpkr kpno kpnp kpoa kpob kpok kpoo kpop kppk kppo kppp kppr kprb kprk kprn kpro kprp kprr krab krak kran krap krar krba krbb krbk krbr krka krkk krkn krko krkr krna krnb krnk krnn krno krnp kroa krob krok kroo krop kror krpa krpr krrb krrk krrn krro krrr naaa naab naan naar naba nabk nabo naka nako nan- nana nanb nann nano nanp naor napa napb napo napp nara nark narn naro narp narr nbaa nbak nbap nbar nbbo nbpa nbpp nkok nkor nkpa nnnn nnpr noaa noak noap noba nobo noko non- nona nonn nono noo- noob nook noon nooo noop noor nor- nora norb nork norn noro norr npap nppa npra nrab nrap nrna nron nrpn oara obak oban obba obbo obkb obok obon obor obra obro okak okan okap okka okko okna okno okok okon okor okpo okra okro onab onan onar onkp onna onno onon onor onra ooaa ooak ooba oona oooo oora opan opap opar opo- opon opor oppa oppo opra orab orak oran orao orar orba orbb orbo orka orko orna orno oro- orok oron oror orra orro paak paan paap paar paba paka pako pan- pana pank pann pano paon papa papb papp papr par- para park parn paro parp parr pban pbar pbpa pbpk pkan pkna pnar pnkp pnon pnpo pnpp pnra pnro poak poan poar poba pobo poka poko pona ponk pono ponp pook poon poop poor pop- popa popo popp pora porb pork porn poro porr ppan ppap ppar ppoa pppa pppn pppo pppp pran prao prar prna prnp pro- proa prob pron proo prop raab raak raan raba rabb rabk rabo raka rakk rana rank rann rano raob raok