a-a a-b a-c aaa aab aac aad aah aak aan aao aar ab- aba abb abc abd abh abk abn abo abr ac- aca acb acc acd ach ack acn aco acr ad- ada adb adc add adh adk adn ado adr aha ahb ahc ahd ahh ahk ahn aho ahr aka akb akc akd akh akk akn ako akr an- ana anb anc and anh ank ann ano anr aoa aob aoc aod aoh aok aon aoo aor ar- ara arb arc ard arh ark arn aro arr baa bab bac bad bah bak ban bao bar bba bbb bbc bbd bbh bbk bbn bbo bbr bca bcb bcc bcd bch bck bcn bco bcr bda bdb bdc bdd bdh bdk bdo bdr bha bhb bhc bhd bhh bhk bho bhr bka bkb bkc bkk bkn bko bkr bna bnb bnc bnd bnk bnn bno bnr boa bob boc bod boh bok bon boo bor bra brb brd brh brk brn bro brr c-- caa cab cac cad cah cak can cao car cba cbb cbc cbd cbh cbk cbn cbo cbr cca ccb ccc ccd cch cck ccn cco ccr cda cdb cdc cdd cdh cdk cdn cdo cdr ch- cha chb chc chd chh chk chn cho chr cka ckb ckc ckd ckh cko cn- cna cnb cnc cnd cnh cnn cno cnr co- coa cob coc cod coh cok con coo cor cra crb crc crd crh crk crn cro crr daa dab dac dad dah dak dan dao dar dba dbb dbc dbd dbh dbk dbn dbo dbr dca dcb dcc dcd dck dcn dco dcr dda ddb ddc ddd ddh ddk ddn ddo ddr dh- dha dhb dhc dhd dhh dhk dho dhr dka dkb dkc dkk dko dkr dna dnb dnc dnd dnh dnk dnn dno dnr doa dob doc dod doh dok don doo dor dra drb drc drd drk drn dro drr haa hab hac had hah hak han hao har hba hbb hbc hbd hbh hbk hbn hbo hbr hca hcb hcc hcd hch hck hcn hco hcr hda hdb hdc hdd hdh hdk hdn hdo hdr hha hhb hhc hhd hhh hhk hhn hho hhr hka hkb hkd hkh hkk hkn hko hkr hna hnb hnc hnd hnh hnk hnn hno hoa hob hoc hod hoh hok hon hoo hor hr- hra hrb hrc hrd hrh hrk hrn hro hrr ka- kaa kab kac kad kah kak kan kao kar kba kbb kbc kbd kbh kbk kbn kbo kbr kca kcb kcc kcd kch kck kcn kcr kda kdb kdc kdh kdk kdo kdr kha khh khk khn kho khr kkb kkc kkh kkk kkn kkr kn- kna knc knd knk knn kno knr koa kob koc kod koh kok kon koo kor kra krc krd krk krn kro krr naa nab nac nad nah nak nan nao nar nba nbb nbc nbd nbk nbn nbo nbr nca ncb ncc ncd nch nck ncn nco ncr nda ndb ndc ndd ndh ndk ndn ndo ndr nha nhb nhc nhd nhh nhk nhn nhr nka nkc nkk nkn nko nkr nna nnb nnc nnh nnk nnn nno no- noa nob noc nod noh nok non noo nor nra nrb nrc nrd nrk nrn nro nrr oaa oab oac oad oah oak oan oao oar ob- oba obb obc obd obh obk obn obo obr oc- oca ocb occ ocd och ock ocn oco ocr oda odb odc odd odh odn odo odr oha ohc ohd ohh ohn oho ohr oka okb okc okd okk oko okr on- ona onb onc ond onh onk onn ono onr oo- ooa oob ooc ood ooh ook oon ooo oor or- ora orb orc ord orh ork orn oro orr ra- raa rab rac rad rah rak ran rao rar rba rbb rbc rbd rbh rbk rbn rbo rbr rca rcb rcc rcd rch rcn rco rcr rda rdb rdc rdd rdh rdn rdo rdr rh- rha rhb rhc rhd rhh rhn rho rhr rkb rkc rkk rko rna rnb rnc rnd rnh rnn rno rnr roa rob roc rod roh rok ron roo ror rra rrb rrc rrd rrh rrk rrn rrr

-ana a-ak a-do a-ha a-ok aaaa aaab aaac aaad aaah aaan aaar aaba aabb aabc aabd aabh aaca aacb aacc aacd aach aack aacn aaco aacr aada aadc aaha aahk aaka aana aand aaon aaoo aara aarc aard aaro abaa abab abac abad abak aban abar abb- abba abbb abbo abbr abca abcb abcc abcd abch abcn abcr abda abdo abha abho abhr aboa abob abod aboh abok abon aboo abor abra abrc abro acaa acab acac acad acan acar acba acca accc accd acch acco acda acdb acdc acha achh acho achr ackd acoa acod acoh acon acor acr- acra acrc acro acrr adaa adab adac adad adah adak adan adao adar adba adbc adcc adda addc addd addn addo addr adha adhd adhn adho adna adob adoc adod adok adon adoo ador adra adro ahab ahac ahad ahah ahar ahha ahoa ahod ahok ahor ahra ahrc ahrr akaa akah akan akao akar akca akdn akha akka akko akna akok akon akr- akra ana- anaa anab anac anad anah anak anan anao anar anba anbb anbo anca ancc anco and- anda andh ando andr anha ank- anka ankh anko anna annb anno ano- anoa anod anon anor anrc aoah aoba aoca aodh aonb aono aora aorb aorn arab arac arad arah arak aran arar arba arbh arc- arca arch arco arda ardc ardo arh- arka arkh arko arna arnd arnk arno aroa arob arod aron aroo aror arr- arra arrc arrh arrk arro arrr baaa baad baah baak baan baar baba babb babo babr bac- baca bacc bach back bacn baco bada badb badd badh bado badr baha bahn baho bahr bak- baka bakh bako bakr bana banc band banh bank bann bano banr baoh baon bar- bara barb barc bard barh bark barn baro barr bbad bbbb bbch bbdd