a-a a-b a-c aaa aab aac aad aah aak aao aar ab- aba abb abc abd abh abk abo abr ac- aca acb acc acd ach ack aco acr ad- ada adb adc add adh adk ado adr aha ahb ahc ahd ahh ahk aho ahr aka akb akc akd akh akk ako akr aoa aob aoc aod aoh aok aoo aor ar- ara arb arc ard arh ark aro arr baa bab bac bad bah bak bao bar bba bbb bbc bbd bbh bbk bbo bbr bca bcb bcc bcd bch bck bco bcr bda bdb bdc bdd bdh bdk bdo bdr bha bhb bhc bhd bhh bhk bho bhr bka bkb bkc bkk bko bkr boa bob boc bod boh bok boo bor bra brb brd brh brk bro brr c-- caa cab cac cad cah cak cao car cba cbb cbc cbd cbh cbk cbo cbr cca ccb ccc ccd cch cck cco ccr cda cdb cdc cdd cdh cdk cdo cdr ch- cha chb chc chd chh chk cho chr cka ckb ckc ckd ckh cko co- coa cob coc cod coh cok coo cor cra crb crc crd crh crk cro crr daa dab dac dad dah dak dao dar dba dbb dbc dbd dbh dbk dbo dbr dca dcb dcc dcd dck dco dcr dda ddb ddc ddd ddh ddk ddo ddr dh- dha dhb dhc dhd dhh dhk dho dhr dka dkb dkc dkk dko dkr doa dob doc dod doh dok doo dor dra drb drc drd drk dro drr haa hab hac had hah hak hao har hba hbb hbc hbd hbh hbk hbo hbr hca hcb hcc hcd hch hck hco hcr hda hdb hdc hdd hdh hdk hdo hdr hha hhb hhc hhd hhh hhk hho hhr hka hkb hkd hkh hkk hko hkr hoa hob hoc hod hoh hok hoo hor hr- hra hrb hrc hrd hrh hrk hro hrr ka- kaa kab kac kad kah kak kao kar kba kbb kbc kbd kbh kbk kbo kbr kca kcb kcc kcd kch kck kcr kda kdb kdc kdh kdk kdo kdr kha khh khk kho khr kkb kkc kkh kkk kkr koa kob koc kod koh kok koo kor kra krc krd krk kro krr oaa oab oac oad oah oak oao oar ob- oba obb obc obd obh obk obo obr oc- oca ocb occ ocd och ock oco ocr oda odb odc odd odh odo odr oha ohc ohd ohh oho ohr oka okb okc okd okk oko okr oo- ooa oob ooc ood ooh ook ooo oor or- ora orb orc ord orh ork oro orr ra- raa rab rac rad rah rak rao rar rba rbb rbc rbd rbh rbk rbo rbr rca rcb rcc rcd rch rco rcr rda rdb rdc rdd rdh rdo rdr rh- rha rhb rhc rhd rhh rho rhr rkb rkc rkk rko roa rob roc rod roh rok roo ror rra rrb rrc rrd rrh rrk rrr

a-ak a-do a-ha a-ok aaaa aaab aaac aaad aaah aaar aaba aabb aabc aabd aabh aaca aacb aacc aacd aach aack aaco aacr aada aadc aaha aahk aaka aaoo aara aarc aard aaro abaa abab abac abad abak abar abb- abba abbb abbo abbr abca abcb abcc abcd abch abcr abda abdo abha abho abhr aboa abob abod aboh abok aboo abor abra abrc abro acaa acab acac acad acar acba acca accc accd acch acco acda acdb acdc acha achh acho achr ackd acoa acod acoh acor acr- acra acrc acro acrr adaa adab adac adad adah adak adao adar adba adbc adcc adda addc addd addo addr adha adhd adho adob adoc adod adok adoo ador adra adro ahab ahac ahad ahah ahar ahha ahoa ahod ahok ahor ahra ahrc ahrr akaa akah akao akar akca akha akka akko akok akr- akra aoah aoba aoca aodh aora aorb arab arac arad arah arak arar arba arbh arc- arca arch arco arda ardc ardo arh- arka arkh arko aroa arob arod aroo aror arr- arra arrc arrh arrk arro arrr baaa baad baah baak baar baba babb babo babr bac- baca bacc bach back baco bada badb badd badh bado badr baha baho bahr bak- baka bakh bako bakr baoh bar- bara barb barc bard barh bark baro barr bbad bbbb bbch bbdd bbdo bbrc bcaa bcar bcbc bcca bccc bcda bchd bcor bcra bd-r bdbc bddc bddh bhao bhar bhca bhcc bhor bhra boab boac boad boak boar boba bobb bobo boca boch bock boco boda bodb bodh bodo boha bohd boho bohr boka boko boob booc bood booh book boor bor- bora bord borh bork boro borr brab brac brad brah brak brao brca brcb brda brdo brka brkb broa brob broc brod broh brok broo bror brrr c-bo c-cd caaa caab caac caah caba cabo cac- caca cacc cach cack caco cacr cada cadc cadd cado cadr caha caka caod caor cara carb carc card cark caro carr cbac cbar cbbc cbca cbcc cbcr cbdb cbdc cbdo cbha cbka cbko cbkr cbrd cbrh ccaa ccab ccac ccad ccar ccba ccbc ccca cccb cccc ccdc ccdh ccdr ccha cchr ccob ccoc ccod ccra ccrc cd-r cdaa cdac cdad cdba cdda cddb cddr chaa chab chac chad chah chak chao char chca chch chha chka chkb choc chod choh chok choo chor chra chrb chrc chrd chro chrr ckac ckbc ckch ckck ckco ckdo ckoa ckob ckoc ckoo ckor ckrc ckrd coad coak coba cobb cobh cobo coca coch cock coco coda codd coha coho cok- coka coko coob cood cooh cook cor- cora corb corc cord cork coro corr crab crac crar crbc crca crcc crcr crda crdc crkc crob croc crod croh crok croo cror d-bo daab daad daar daba dabb dabo daca dada dado daha daka dako dara darb darc dard dark daro darr dbar dbcc dcbc dcca dccb dccc dcdb dcra dcrk dddd ddoc ddrc dhaa dhad dhak dhao dhar dhod dhor dkba dkdc doab