a-a a-b a-c aaa aab aac aad aak aao aar aay ab- aba abb abc abd abk abo abr aby ac- aca acb acc acd ack aco acr acy ad- ada adb adc add adk ado adr ady aka akb akc akd akk ako akr aoa aob aoc aod aok aoo aor ar- ara arb arc ard ark aro arr ary ay- aya ayc ayd ayk ayo ayr baa bab bac bad bak bao bar bay bba bbb bbc bbd bbk bbo bbr bby bca bcb bcc bcd bck bco bcr bcy bda bdb bdc bdd bdk bdo bdr bdy bka bkb bkc bkk bko bkr boa bob boc bod bok boo bor boy bra brb brd brk bro brr bry by- bya byc byd byk byo byr c-- caa cab cac cad cak cao car cay cba cbb cbc cbd cbk cbo cbr cby cca ccb ccc ccd cck cco ccr cda cdb cdc cdd cdk cdo cdr cdy cka ckb ckc ckd cko cky co- coa cob coc cod cok coo cor coy cra crb crc crd crk cro crr cry cya cyb cyc cyd cyk cyo cyr daa dab dac dad dak dao dar day dba dbb dbc dbd dbk dbo dbr dby dca dcb dcc dcd dck dco dcr dda ddb ddc ddd ddk ddo ddr ddy dka dkb dkc dkk dko dkr doa dob doc dod dok doo dor doy dra drb drc drd drk dro drr dry dy- dya dyb dyc dyd dyk dyo dyr dyy ka- kaa kab kac kad kak kao kar kay kba kbb kbc kbd kbk kbo kbr kca kcb kcc kcd kck kcr kda kdb kdc kdk kdo kdr kdy kkb kkc kkk kkr kky koa kob koc kod kok koo kor koy kra krc krd krk kro krr kry kya kyc kyd kyo kyr oaa oab oac oad oak oao oar ob- oba obb obc obd obk obo obr oby oc- oca ocb occ ocd ock oco ocr oda odb odc odd odo odr oka okb okc okd okk oko okr oo- ooa oob ooc ood ook ooo oor or- ora orb orc ord ork oro orr ory oya oyd oyo ra- raa rab rac rad rak rao rar ray rba rbb rbc rbd rbk rbo rbr rca rcb rcc rcd rco rcr rda rdb rdc rdd rdo rdr rdy rkb rkc rkk rko rky roa rob roc rod rok roo ror roy rra rrb rrc rrd rrk rrr ry- rya ryc ryd ryk ryo ryr ryy yaa yab yac yad yak yao yar yay ybc ybr yby yca ycc ycd yco ycy yda ydo ydy yka ykk yob yoc yod yok yoo yor yoy yra yrc yro yyb yyc yyy

a-ak a-do a-ok a-ya a-yo aaaa aaab aaac aaad aaar aaba aabb aabc aabd aaby aaca aacb aacc aacd aack aaco aacr aacy aada aadc aaka aaoo aara aarc aard aaro abaa abab abac abad abak abar abay abb- abba abbb abbo abbr abby abca abcb abcc abcd abcr abda abdo abdy aboa abob abod abok aboo abor aboy abra abrc abro abry abyc abyy acaa acab acac acad acar acba acca accc accd acco accy acda acdb acdc ackd acoa acod acor acoy acr- acra acrc acro acrr acry adaa adab adac adad adak adao adar aday adba adbc adcc adda addc addd addo addr addy adob adoc adod adok adoo ador adra adro adry adya akaa akao akar akay akca akka akko akok akr- akra akyr aoba aoca aora aorb arab arac arad arak arar aray arba arby arc- arca arco arda ardc ardo arka arko arky aroa arob arod aroo aror arr- arra arrc arrk arro arrr arry ary- arya aryk ay-o ayad ayao ayar ayay ayca ayda ayod ayoo ayra ayrk ayry ayya baaa baad baak baar baba babb babo babr baby bac- baca bacc back baco bada badb badd bado badr bady bak- baka bako bakr bar- bara barb barc bard bark baro barr bary baya bayo bbad bbay bbbb bbdd bbdo bboy bbrc bbyo bcaa bcar bcbc bcca bccc bcda bcor bcra bd-r bday bdbc bddc bdry bkcy bkry boab boac boad boak boar boba bobb bobo boby boca bock boco boda bodb bodo body boka boko boob booc bood book boor bor- bora bord bork boro borr bory boya boyd boyo brab brac brad brak brao bray brca brcb brda brdo brdy brka brkb broa brob broc brod brok broo bror brrr bry- brya bryd bryk bryo byar byck byoa byob byoc byod byrd byrk byyd c-bo c-cd caaa caab caac caba cabo caby cac- caca cacc cack caco cacr cada cadc cadd cado cadr cady caka caky caod caor cara carb carc card cark caro carr cary cayo cayr cbac cbar cbbc cbca cbcc cbcr cbdb cbdc cbdo cbka cbko cbkr cbrd cbry ccaa ccab ccac ccad ccar ccba ccbc ccca cccb cccc ccdc ccdr ccob ccoc ccod ccra ccrc cd-r cdaa cdac cdad cday cdba cdda cddb cddr ckac ckbc ckck ckco ckcy ckdo ckoa ckob ckoc ckoo ckor ckoy ckrc ckrd ckry coad coak coba cobb cobo coby coca cock coco coda codd cody cok- coka coko coky coob cood cook cor- cora corb corc cord cork coro corr cory coya coyo coyr crab crac crar cray crbc crca crcc crcr crda crdc crkc crob croc crod crok croo cror croy cry- crya cryb cryo cya- cyaa cyar cyba cybb cybc cybo cyc- cyca cycb cycc cyoa cyra cyrk cyy- cyyc d-bo daab daad daar daba dabb dabo daca dada dado dady daka dako dara darb darc dard dark daro darr dary daya dayo dbar dbcc dboy dc-y dcbc dcca dccb dccc dcdb dcra dcrk dday dddd ddoc ddrc ddry dkba dkdc doab doak doar doba dobb doby doca dock doco dod- doda dodd dodo dody doka doko doky doob dood dook door dora dorc dord dork doro dorr dory doya doyk doyo draa drab drac drad drak drar dray drba drbc drca drda drob drod droy