-ic a-a a-b a-c a-i aaa aab aac aai aak aao aau aav ab- aba abb abc abi abk abo abu abv ac- aca acb acc aci ack aco acu acv ai- aia aib aic aii aik aio aiu aiv aka akb akc aki akk ako aku akv aoa aob aoc aoi aok aoo aou aov au- aua aub auc aui auk auo auv av- ava avb avc avi avk avo avu b-u baa bab bac bai bak bao bau bav bba bbb bbc bbi bbk bbo bbu bca bcb bcc bci bck bco bcu bcv bi- bia bib bic bii bik bio biu biv bka bkb bkc bkk bko bkv boa bob boc boi bok boo bou bov bua bub buc bui buk buo buu bva bvb bvc bvi bvk bvo bvu bvv c-- caa cab cac cai cak cao cau cav cba cbb cbc cbi cbk cbo cbu cbv cca ccb ccc cci cck cco ccu ccv ci- cia cib cic cii cik cio ciu civ cka ckb ckc cki cko co- coa cob coc coi cok coo cou cov cua cub cuc cui cuk cuo cuu cuv cva cvb cvc cvi cvk cvo cvu cvv i-v ia- iaa iab iac iai iao iau iav iba ibb ibc ibi ibk ibo ibu ibv ica icb icc ici ick ico icu icv iia iib iic iii iio iiu ika ikb ikc iki ikk iko iku ikv io- ioa iob ioc ioi ioo iou iov iu- iua iub iuc iui iva ivb ivc ivi ivo ivu ivv ka- kaa kab kac kai kak kao kau kav kba kbb kbc kbi kbk kbo kbu kca kcb kcc kci kck kcu kia kib kic kii kik kio kiu kiv kkb kkc kki kkk kku kkv koa kob koc koi kok koo kou kub kuc kui kuk kuu kva kvb kvi kvk kvo kvv o-i oaa oab oac oai oak oao oau oav ob- oba obb obc obi obk obo obu obv oc- oca ocb occ oci ock oco ocu ocv oia oib oic oii oik oio oiu oiv oka okb okc oki okk oko oku oo- ooa oob ooc ooi ook ooo oov ou- oua ouc oui ouk ouo ov- ova ovb ovc ovi ovo ovv ua- uaa uab uac uai uak uao uau uav uba ubb ubc ubi ubk ubo ubu ubv uca ucb ucc uci uck uco ucu ucv uia uib uic uii uio uiu uka ukb ukc uki ukk uku uoa uob uoc uok uoo uua uuc uuu uva uvb uvc uvo uvu uvv v-a vaa vab vac vai vak vao vau vav vba vbc vbi vbk vbo vbv vca vcc vci vco vcu vi- via vib vic vii vik vio viu viv vka vkb voa vob voc voi vok voo vou vov vuk vuv vva vvb vvc vvi vvo vvv