a-a a-b a-c aaa aab aac aah aak aan aar ab- aba abb abc abh abk abn abr ac- aca acb acc ach ack acn acr aha ahb ahc ahh ahk ahn ahr aka akb akc akh akk akn akr an- ana anb anc anh ank ann anr ar- ara arb arc arh ark arn arr baa bab bac bah bak ban bar bba bbb bbc bbh bbk bbn bbr bca bcb bcc bch bck bcn bcr bha bhb bhc bhh bhk bhr bka bkb bkc bkk bkn bkr bna bnb bnc bnk bnn bnr bra brb brh brk brn brr c-- caa cab cac cah cak can car cba cbb cbc cbh cbk cbn cbr cca ccb ccc cch cck ccn ccr ch- cha chb chc chh chk chn chr cka ckb ckc ckh cn- cna cnb cnc cnh cnn cnr cra crb crc crh crk crn crr haa hab hac hah hak han har hba hbb hbc hbh hbk hbn hbr hca hcb hcc hch hck hcn hcr hha hhb hhc hhh hhk hhn hhr hka hkb hkh hkk hkn hkr hna hnb hnc hnh hnk hnn hr- hra hrb hrc hrh hrk hrn hrr ka- kaa kab kac kah kak kan kar kba kbb kbc kbh kbk kbn kbr kca kcb kcc kch kck kcn kcr kha khh khk khn khr kkb kkc kkh kkk kkn kkr kn- kna knc knk knn knr kra krc krk krn krr naa nab nac nah nak nan nar nba nbb nbc nbk nbn nbr nca ncb ncc nch nck ncn ncr nha nhb nhc nhh nhk nhn nhr nka nkc nkk nkn nkr nna nnb nnc nnh nnk nnn nra nrb nrc nrk nrn nrr ra- raa rab rac rah rak ran rar rba rbb rbc rbh rbk rbn rbr rca rcb rcc rch rcn rcr rh- rha rhb rhc rhh rhn rhr rkb rkc rkk rna rnb rnc rnh rnn rnr rra rrb rrc 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 aaha aahk aaka aana aara aarc abaa abab abac abak aban abar abb- abba abbb abbr abca abcb abcc abch abcn abcr abha abhr abra abrc acaa acab acac acan acar acba acca accc acch acha achh achr acr- acra acrc acrr ahab ahac ahah ahar ahha ahra ahrc ahrr akaa akah akan akar akca akha akka akna akr- akra ana- anaa anab anac anah anak anan anar anba anbb anca ancc anha ank- anka ankh anna annb anrc arab arac arah arak aran arar arba arbh arc- arca arch arh- arka arkh arna arnk arr- arra arrc arrh arrk arrr baaa baah baak baan baar baba babb babr bac- baca bacc bach back bacn baha bahn bahr bak- baka bakh bakr bana banc banh bank bann banr bar- bara barb barc barh bark barn barr bbbb bbch bbrc bcaa bcar bcbc bcca bccc bcra bhan bhar bhca bhcc bhra bnrr brab brac brah brak bran brca brcb brka brkb brna brrr caaa caab caac caah caan caba cac- caca cacc cach cack cacr caha cahn caka cana canc canh cank cann cara carb carc cark carn carr cbac cbar cbbc cbca cbcc cbcn cbcr cbha cbka cbkn cbkr cbna cbrh cbrn ccaa ccab ccac ccar ccba ccbc ccbn ccca cccb cccc ccha cchr ccna ccnb ccnc ccnr ccra ccrc chaa chab chac chah chak chan char chca chch chha chka chkb chnb chnc chnr chra chrb chrc chrn chrr ckac ckan ckbc ckch ckck cknb cknc ckrc cnaa cnac cnbc cnna cnrc cnrr crab crac cran crar crbc crca crcc crcr crkc crna haab haak haan haar haba hack haha hahn haka hakk hana hanc hank hann hara harc harh hark harn harr hbar hcbc hcca hccb hccc hcch hhaa hhhh hkcc hnna hrac hran hrrc kaaa kaab kaak kaan kaar kaba kabb kabc kabr kacb kacc kach kaha kahc kahn kahr kaka kakc kakh kakk kakn kana kanb kanh kann kara karb kark karn karr kbaa kbab kbac kbak kbar kbba kbbb kbbc kbbk kbbr kbca kbcb kbch kbck kbcr kbhb kbhc kbhh kbhn kbhr kbkb kbkk kbkr kbna kbnh kbnn kbnr kbra kbrb kbrc kbrh kbrk kbrn kcaa kcab kcac kcah kcar kcba kcbc kcbk kcbr kcca kccb kccc kcck kccr kcha kchh kchk kchn kchr kckc kckk kckn kckr kcnb kcnh kcnr kcrc kcrh kcrn kcrr khab khac khak khan khar khbc khbr khca khcb khcc khch khck khhk khka khkk khkn khkr khna khnc khnk khnr khra khrk khrr kkaa kkac kkan kkar kkba kkbb kkbn kkbr kkcb kkch kkck kkcn kkcr kkha kkhb kkhh kkhk kkhr kkkk kknb kknn kkrb kkrc kkrh kkrk kkrn kkrr knaa knab knac knah knan knar knba knbb knbc knbn knbr knca kncb knch knck kncn kncr knhc knhk knkk knnb knnk knnr knrb knrk krab krac krah krak kran krar krba krbb krbk krbr krca krcb krcc krch krcn krhc krka krkc krkh krkk krkn krkr krna krnb krnh krnk krnn krrb krrc krrk krrn krrr naaa naab naac naan naar naba nabc nabk naca nacc nach nack naha nahk nahr naka nan- nana nanb nann nara narc narh nark narn narr nbaa nbak nbar nbbc nbca nbcc ncaa ncac ncar ncba ncbc ncca nccc nccn nccr ncha nchc ncna ncnc ncra ncrc nhcc nhnn nhra nhrc nnnn nrab nrca nrna nrrc raab raak raan raba rabb rabk rac- raca racc rach rack raha rahn rahr raka rakk rana ranc rank rann rara rarb rark rbbb rbbr rcac rcbc rccb rccc rchb rcnr rnbr rrah rrna rrrr

-aaa- aaaah aaarc aabaa aabba aabra aacbc aahaa aanch aarah aarch aarna abaab ababa abaca aback abaka abana abanc abank abann abara abarn abbac abban abbar abcan abccc abhar abkar abnak abrac abrak abran abrar acaca acacb acack acana acar- acara accra achab achak achan achar achna ackah acrab ahank ahhaa ahhha ahnak ahrab ahran ahrar akaba akana akbah akban akbar akhba