a-a a-b a-c aaa aab aac aag aah aao aar aau ab- aba abb abc abg abh abo abr abu ac- aca acb acc acg ach aco acr acu ag- aga agb agc agg agh ago agr agu aha ahb ahc ahg ahh aho ahr ahu aoa aob aoc aog aoh aoo aor aou ar- ara arb arc arg arh aro arr aru au- aua aub auc aug auh auo aur b-u baa bab bac bag bah bao bar bau bba bbb bbc bbg bbh bbo bbr bbu bca bcb bcc bcg bch bco bcr bcu bga bgb bgc bgg bgh bgo bgr bgu bha bhb bhc bhg bhh bho bhr bhu boa bob boc bog boh boo bor bou bra brb brg brh bro brr bru bua bub buc bug buh buo bur buu c-- caa cab cac cag cah cao car cau cba cbb cbc cbg cbh cbo cbr cbu cca ccb ccc ccg cch cco ccr ccu cga cgb cgc cgg cgh cgo cgr cgu ch- cha chb chc chg chh cho chr chu co- coa cob coc cog coh coo cor cou cra crb crc crg crh cro crr cru cua cub cuc cug cuh cuo cur cuu gaa gab gac gag gah gao gar gau gba gbc gbg gbh gbo gbr gbu gca gcb gcc gcg gch gco gcr gcu gga ggb ggc ggg ggh ggo ggr ggu gha ghb ghc ghg ghh gho ghr goa gob goc gog goh goo gor gou gra grb grc grg grh gro grr gru gu- gua gub guc gug guo gur guu haa hab hac hag hah hao har hau hba hbb hbc hbg hbh hbo hbr hbu hca hcb hcc hcg hch hco hcr hga hgb hgc hgg hgh hgo hgr hgu hha hhb hhc hhg hhh hho hhr hhu hoa hob hoc hog hoh hoo hor hou hr- hra hrb hrc hrg hrh hro hrr hru hua hub huc hug huh huo hur huu oaa oab oac oag oah oao oar oau ob- oba obb obc obg obh obo obr obu oc- oca ocb occ ocg och oco ocr ocu oga ogc ogg ogh ogo oha ohc ohg ohh oho ohr ohu oo- ooa oob ooc oog ooh ooo oor or- ora orb orc org orh oro orr oru ou- oua ouc ouh ouo our ra- raa rab rac rag rah rao rar rau rba rbb rbc rbg rbh rbo rbr rbu rca rcb rcc rcg rch rco rcr rcu rga rgb rgc rgg rgh rgo rgr rh- rha rhb rhc rhg rhh rho rhr rhu roa rob roc rog roh roo ror rou rra rrb rrc rrg rrh rrr rru rua rub ruc rug ruh ruo rur ruu ua- uaa uab uac uag uah uao uar uau uba ubb ubc ubg ubh ubo ubr ubu uca ucb ucc ucg uch uco ucr ucu uga ugb ugc ugg ugh ugo ugr ugu uha uhb uhc uhh uho uhr uhu uoa uob uoc uog uoo uor ur- ura urb urc urg uro urr uru uua uuc uug uur uuu

-hou a-ha aaaa aaab aaac aaah aaar aaba aabb aabc aabh aaca aacb aacc aach aaco aacr aacu aagh aaha aaoo aara aarc aaro aaru abaa abab abac abag abar abau abb- abba abbb abbo abbr abca abcb abcc abch abcr abha abho abhr aboa abob aboh aboo abor abou abra abrc abro abua abug acaa acab acac acag acar acba acca accc acch acco accu acga acgr acha achh acho achr achu acoa acog acoh acor acou acr- acra acrc acro acrr acu- acuo acur ag-o agac agag agao agar agau agba agbo agca agcc agco agga aggu agha agob agog agoo agou agra agro agua agur ahab ahac ahah ahar ahau ahha ahoa ahog ahor ahra ahrc ahrr ahua ahug aoah aoba aoca aora aorb arab arac arag arah arar arau arba arbh arc- arca arch arco arga argb argh argo arh- aroa arob aroo aror arr- arra arrc arrg arrh arro arrr arru arua arub arug auaa auca auch auga aur- aura auro auug baaa baah baar baba babb babo babr babu bac- baca bacc bach baco baga bagg bagh bago baha baho bahr bahu baoh bar- bara barb barc barg barh baro barr baru bau- baug baur bbau bbbb bbch bbga bbrc bbrg bcaa bcar bcbc bcbg bcca bccc bcor bcra bcru bcuc bgca bhag bhao bhar bhca bhcc bhog bhor bhra bhur bhuu boab boac boag boar boba bobb bobo bobu boca boch boco bocu boga bogg bogh bogo boha boho bohr bohu boob booc boog booh boor bor- bora borg borh boro borr boru boua bouh bour brab brac brag brah brao brau brca brcb broa brob broc brog broh broo bror brou brrr bruc brug bruh buar buba bubb bubo bubu buca bucc buch buco bucu buga bugg bugh bugo buha buho buhr bur- bura burb burg burh buro burr buru c-bo caaa caab caac caah caba cabg cabo cabu cac- caca cacc cach caco cacr caga cagg cago cagr caha caor cara carb carc caro carr cauc cauo cbac cbar cbbc cbca cbcc cbcr cbcu cbga cbgb cbha cbrh ccaa ccab ccac ccag ccar ccba ccbc ccca cccb cccc cccu ccga ccgc ccha cchr ccob ccoc ccra ccrc ccrg ccuc cgac cgcc cgcg cgro chaa chab chac chag chah chao char chau chca chch chgb chha choc choh choo chor chou chra chrb chrc chro chrr chua chub chug chur coag coba cobb cobh cobo cobu coca coch coco cocu cogh cogo coha coho coob cooh cor- cora corb corc corg coro corr coua coub cour crab crac crag crar crau crbc crbu crca crcc crcr crob croc croh croo cror crub crug cuau cub- cuba cubb cuca cucc cuga cura curb curo curr gaar gaba gabb gabo gabr gabu gach gaga gagg gago gagu gaha gaoh gara garb garg garo garr gaua gaub gaur gbag gbbo gc-c gcaa gcbc gccc gcoa gcrg gggg gghg ghar ghug goar goba gobo