-ic a-a a-b a-c a-i aaa aab aac aah aai aak aao aar aau ab- aba abb abc abh abi abk abo abr abu ac- aca acb acc ach aci ack aco acr acu aha ahb ahc ahh ahi ahk aho ahr ahu ai- aia aib aic aih aii aik aio air aiu aka akb akc akh aki akk ako akr aku aoa aob aoc aoh aoi aok aoo aor aou ar- ara arb arc arh ari ark aro arr aru au- aua aub auc auh aui auk auo aur b-u baa bab bac bah bai bak bao bar bau bba bbb bbc bbh bbi bbk bbo bbr bbu bca bcb bcc bch bci bck bco bcr bcu bha bhb bhc bhh bhi bhk bho bhr bhu bi- bia bib bic bih bii bik bio bir biu bka bkb bkc bkk bko bkr boa bob boc boh boi bok boo bor bou bra brb brh bri brk bro brr bru bua bub buc buh bui buk buo bur buu c-- caa cab cac cah cai cak cao car cau cba cbb cbc cbh cbi cbk cbo cbr cbu cca ccb ccc cch cci cck cco ccr ccu ch- cha chb chc chh chi chk cho chr chu ci- cia cib cic cih cii cik cio cir ciu cka ckb ckc ckh cki cko co- coa cob coc coh coi cok coo cor cou cra crb crc crh cri crk cro crr cru cua cub cuc cuh cui cuk cuo cur cuu h-i haa hab hac hah hai hak hao har hau hba hbb hbc hbh hbi hbk hbo hbr hbu hca hcb hcc hch hci hck hco hcr hha hhb hhc hhh hhi hhk hho hhr hhu hia hib hic hih hii hik hio hir hiu hka hkb hkh hki hkk hko hkr hku hoa hob hoc hoh hoi hok hoo hor hou hr- hra hrb hrc hrh hri hrk hro hrr hru hua hub huc huh hui huk huo hur huu ia- iaa iab iac iah iai iao iar iau iba ibb ibc ibh ibi ibk ibo ibr ibu ica icb icc ich ici ick ico icr icu iha ihb ihc ihh ihi ihk iho ihr ihu iia iib iic iih iii iio iir iiu ika ikb ikc iki ikk iko ikr iku io- ioa iob ioc ioh ioi ioo ior iou ir- ira irb irc iri irk iro irr iru iu- iua iub iuc iui iur ka- kaa kab kac kah kai kak kao kar kau kba kbb kbc kbh kbi kbk kbo kbr kbu kca kcb kcc kch kci kck kcr kcu kha khh khi khk kho khr khu kia kib kic kih kii kik kio kir kiu kkb kkc kkh kki kkk kkr kku koa kob koc koh koi kok koo kor kou kra krc kri krk kro krr kru kub kuc kuh kui kuk kur kuu o-i oaa oab oac oah oai oak oao oar oau ob- oba obb obc obh obi obk obo obr obu oc- oca ocb occ och oci ock oco ocr ocu oha ohc ohh ohi oho ohr ohu oia oib oic oii oik oio oir oiu oka okb okc oki okk oko okr oku oo- ooa oob ooc ooh ooi ook ooo oor or- ora orb orc orh ori ork oro orr oru ou- oua ouc ouh oui ouk ouo our ra- raa rab rac rah rai rak rao rar rau rba rbb rbc rbh rbi rbk rbo rbr rbu rca rcb rcc rch rci rco rcr rcu rh- rha rhb rhc rhh rhi rho rhr rhu ria rib ric rih rii rik rio rir rkb rkc rkk rko rku roa rob roc roh roi rok roo ror rou rra rrb rrc rrh rri rrk rrr rru rua rub ruc ruh rui ruk ruo rur ruu ua- uaa uab uac uah uai uak uao uar uau uba ubb ubc ubh ubi ubk ubo ubr ubu uca ucb ucc uch uci uck uco ucr ucu uha uhb uhc uhh uhi uho uhr uhu uia uib uic uii uio uir uiu uka ukb ukc uki ukk ukr uku uoa uob uoc uok uoo uor ur- ura urb urc uri urk uro urr uru uua uuc uur uuu