a-a a-b a-c aaa aab aac aad aah aao aar aau ab- aba abb abc abd abh abo abr abu ac- aca acb acc acd ach aco acr acu ad- ada adb adc add adh ado adr adu aha ahb ahc ahd ahh aho ahr ahu aoa aob aoc aod aoh aoo aor aou ar- ara arb arc ard arh aro arr aru au- aua aub auc aud auh auo aur b-u baa bab bac bad bah bao bar bau bba bbb bbc bbd bbh bbo bbr bbu bca bcb bcc bcd bch bco bcr bcu bda bdb bdc bdd bdh bdo bdr bdu bha bhb bhc bhd bhh bho bhr bhu boa bob boc bod boh boo bor bou bra brb brd brh bro brr bru bua bub buc bud buh buo bur buu c-- caa cab cac cad cah cao car cau cba cbb cbc cbd cbh cbo cbr cbu cca ccb ccc ccd cch cco ccr ccu cda cdb cdc cdd cdh cdo cdr cdu ch- cha chb chc chd chh cho chr chu co- coa cob coc cod coh coo cor cou cra crb crc crd crh cro crr cru cua cub cuc cud cuh cuo cur cuu daa dab dac dad dah dao dar dau dba dbb dbc dbd dbh dbo dbr dbu dca dcb dcc dcd dco dcr dcu dda ddb ddc ddd ddh ddo ddr ddu dh- dha dhb dhc dhd dhh dho dhr dhu doa dob doc dod doh doo dor dou dra drb drc drd dro drr dru dua dub duc dud duh duo dur haa hab hac had hah hao har hau hba hbb hbc hbd hbh hbo hbr hbu hca hcb hcc hcd hch hco hcr hda hdb hdc hdd hdh hdo hdr hdu hha hhb hhc hhd hhh hho hhr hhu hoa hob hoc hod hoh hoo hor hou hr- hra hrb hrc hrd hrh hro hrr hru hua hub huc hud huh huo hur huu oaa oab oac oad oah oao oar oau ob- oba obb obc obd obh obo obr obu oc- oca ocb occ ocd och oco ocr ocu oda odb odc odd odh odo odr odu oha ohc ohd ohh oho ohr ohu oo- ooa oob ooc ood ooh ooo oor or- ora orb orc ord orh oro orr oru ou- oua ouc oud ouh ouo our ra- raa rab rac rad rah rao rar rau rba rbb rbc rbd rbh rbo rbr rbu rca rcb rcc rcd rch rco rcr rcu rda rdb rdc rdd rdh rdo rdr rdu rh- rha rhb rhc rhd rhh rho rhr rhu roa rob roc rod roh roo ror rou rra rrb rrc rrd rrh rrr rru rua rub ruc rud ruh ruo rur ruu ua- uaa uab uac uad uah uao uar uau uba ubb ubc ubh ubo ubr ubu uca ucb ucc ucd uch uco ucr ucu uda udb udc udd udo udr udu uha uhb uhc uhd uhh uho uhr uhu uoa uob uoc uod uoo uor ur- ura urb urc urd uro urr uru uua uuc uur uuu

-hou a-do a-ha aaaa aaab aaac aaad aaah aaar aaba aabb aabc aabd aabh aaca aacb aacc aacd aach aaco aacr aacu aada aadc aadu aaha aaoo aara aarc aard aaro aaru abaa abab abac abad abar abau abb- abba abbb abbo abbr abca abcb abcc abcd abch abcr abda abdo abdu abha abho abhr aboa abob abod aboh aboo abor abou abra abrc abro abua abud acaa acab acac acad acar acba acca accc accd acch acco accu acda acdb acdc acha achh acho achr achu acoa acod acoh acor acou acr- acra acrc acro acrr acu- acuo acur adaa adab adac adad adah adao adar adba adbc adcc adda addc addd addo addr addu adha adhd adho adhu adob adoc adod adoo ador adra adro adua adub adur ahab ahac ahad ahah ahar ahau ahha ahoa ahod ahor ahra ahrc ahrr ahua aoah aoba aoca aodh aora aorb arab arac arad arah arar arau arba arbh arc- arca arch arco arda ardc ardo ardu arh- aroa arob arod aroo aror arr- arra arrc arrh arro arrr arru arua arub arud auaa auca auch audc audh audo aur- aura aurd auro baaa baad baah baar baba babb babo babr babu bac- baca bacc bach baco bada badb badd badh bado badr badu baha baho bahr bahu baoh bar- bara barb barc bard barh baro barr baru bau- baud baur bbad bbau bbbb bbch bbdd bbdo bbrc bcaa bcar bcbc bcca bccc bcda bchd bcor bcra bcru bcuc bd-r bdbc bddc bddh bhao bhar bhca bhcc bhor bhra bhur bhuu boab boac boad boar boba bobb bobo bobu boca boch boco bocu boda bodb bodh bodo bodu boha bohd boho bohr bohu boob booc bood booh boor bor- bora bord borh boro borr boru boua boud bouh bour brab brac brad brah brao brau brca brcb brda brdo broa brob broc brod broh broo bror brou brrr bruc brud bruh buad buar buba bubb bubo bubu buca bucc buch buco bucu buda budb budd budo budu buha buho buhr bur- bura burb burd burh buro burr buru c-bo c-cd caaa caab caac caah caba cabo cabu cac- caca cacc cach caco cacr cada cadc cadd cado cadr cadu caha caod caor cara carb carc card caro carr cauc cauo cbac cbar cbbc cbca cbcc cbcr cbcu cbdb cbdc cbdo cbha cbrd cbrh ccaa ccab ccac ccad ccar ccba ccbc ccca cccb cccc cccu ccdc ccdh ccdr ccha cchr ccob ccoc ccod ccra ccrc ccuc cd-r cdaa cdac cdad cdba cdda cddb cddr chaa chab chac chad chah chao char chau chca chch chha choc chod choh choo chor chou chra chrb chrc chrd chro chrr chua chub chud chur coad coba cobb cobh cobo cobu coca coch coco cocu coda codd coha coho coob cood cooh cor- cora corb corc cord coro corr coua coub coud cour crab crac crar crau crbc crbu crca crcc