-ic a-a a-b a-c a-i aaa aab aac aag aai aak aan aar aau ab- aba abb abc abg abi abk abn abr abu ac- aca acb acc acg aci ack acn acr acu ag- aga agb agc agg agi agk agn agr agu ai- aia aib aic aig aii aik ain air aiu aka akb akc akg aki akk akn akr aku an- ana anb anc ang ani ank ann anr anu ar- ara arb arc arg ari ark arn arr aru au- aua aub auc aug aui auk aun aur b-u baa bab bac bag bai bak ban bar bau bba bbb bbc bbg bbi bbk bbn bbr bbu bca bcb bcc bcg bci bck bcn bcr bcu bga bgb bgc bgg bgi bgk bgn bgr bgu bi- bia bib bic big bii bik bin bir biu bka bkb bkc bkg bkk bkn bkr bna bnb bnc bng bni bnk bnn bnr bnu bra brb brg bri brk brn brr bru bua bub buc bug bui buk bun bur buu c-- caa cab cac cag cai cak can car cau cba cbb cbc cbg cbi cbk cbn cbr cbu cca ccb ccc ccg cci cck ccn ccr ccu cga cgb cgc cgg cgi cgn cgr cgu ci- cia cib cic cig cii cik cin cir ciu cka ckb ckc cki cn- cna cnb cnc cng cni cnn cnr cnu cra crb crc crg cri crk crn crr cru cua cub cuc cug cui cuk cun cur cuu gaa gab gac gag gai gak gan gar gau gba gbc gbg gbi gbk gbn gbr gbu gca gcb gcc gcg gci gck gcn gcr gcu gga ggb ggc ggg ggi ggn ggr ggu gia gib gic gig gii gik gin gir giu gka gkb gkn gna gnb gnc gni gnn gnr gnu gra grb grc grg gri grk grn grr gru gu- gua gub guc gug gui guk gun gur guu ia- iaa iab iac iag iai ian iar iau iba ibb ibc ibg ibi ibk ibn ibr ibu ica icb icc icg ici ick icn icr icu iga igb igc igg igi igk ign igr igu iia iib iic iii iin iir iiu ika ikb ikc iki ikk ikr iku in- ina inb inc ing ini ink inn inr inu ir- ira irb irc irg iri irk irn irr iru iu- iua iub iuc iug iui iur ka- kaa kab kac kag kai kak kan kar kau kba kbb kbc kbi kbk kbn kbr kbu kca kcb kcc kcg kci kck kcn kcr kcu kga kgb kgc kgi kgu kia kib kic kig kii kik kin kir kiu kkb kkc kki kkk kkn kkr kku kn- kna knc kng kni knk knn knr knu kra krc krg kri krk krn krr kru kub kuc kug kui kuk kun kur kuu n-i naa nab nac nag nai nak nan nar nau nba nbb nbc nbg nbi nbk nbn nbr nbu nca ncb ncc ncg nci nck ncn ncr ncu nga ngb ngc ngg ngi ngk ngn ngu nia nib nic nig nii nik nin nir niu nka nkc nki nkk nkn nkr nku nna nnb nnc nng nni nnk nnn nnu nra nrb nrc nrg nri nrk nrn nrr nru nua nub nuc nug nui nuk nun nur nuu ra- raa rab rac rag rai rak ran rar rau rba rbb rbc rbg rbi rbk rbn rbr rbu rca rcb rcc rcg rci rcn rcr rcu rga rgb rgc rgg rgi rgk rgn rgr ria rib ric rig rii rik rin rir rkb rkc rkg rkk rku rna rnb rnc rng rni rnn rnr rnu rra rrb rrc rrg rri rrk rrn rrr rru rua rub ruc rug rui ruk run rur ruu ua- uaa uab uac uag uai uak uan uar uau uba ubb ubc ubg ubi ubk ubn ubr ubu uca ucb ucc ucg uci uck ucn ucr ucu uga ugb ugc ugg ugi ugk ugn ugr ugu uia uib uic uig uii uin uir uiu uka ukb ukc uki ukk ukn ukr uku un- una unb unc ung uni unk unn unr unu ur- ura urb urc urg uri urk urn urr uru uua uuc uug uun uur uuu