-al -ic -ol a-a a-b a-c a-i aaa aab aac aai aak aal aao aav ab- aba abb abc abi abk abl abo abv ac- aca acb acc aci ack acl aco acv ai- aia aib aic aii aik ail aio aiv aka akb akc aki akk akl ako akv al- ala alb alc ali alk all alo alv aoa aob aoc aoi aok aol aoo aov av- ava avb avc avi avk avl avo baa bab bac bai bak bal bao bav bba bbb bbc bbi bbk bbl bbo bca bcb bcc bci bck bcl bco bcv bi- bia bib bic bii bik bil bio biv bka bkb bkc bkk bkl bko bkv bla blb blc bli blk bll blo blv boa bob boc boi bok bol boo bov bva bvb bvc bvi bvk bvl bvo bvv c-- caa cab cac cai cak cal cao cav cba cbb cbc cbi cbk cbl cbo cbv cca ccb ccc cci cck ccl cco ccv ci- cia cib cic cii cik cil cio civ cka ckb ckc cki cko cl- cla clb clc cli clk cll clo clv co- coa cob coc coi cok col coo cov cva cvb cvc cvi cvk cvl cvo cvv i-v ia- iaa iab iac iai ial iao iav iba ibb ibc ibi ibk ibl ibo ibv ica icb icc ici ick icl ico icv iia iib iic iii iil iio ika ikb ikc iki ikk ikl iko ikv il- ila ilb ilc ili ilk ill ilo ilv io- ioa iob ioc ioi iol ioo iov iva ivb ivc ivi ivl ivo ivv ka- kaa kab kac kai kak kal kao kav kba kbb kbc kbi kbk kbl kbo kca kcb kcc kci kck kcl kia kib kic kii kik kil kio kiv kkb kkc kki kkk kkl kkv kl- kla klb klc kli klo klv koa kob koc koi kok kol koo kva kvb kvi kvk kvo kvv la- laa lab lac lai lak lal lao lav lba lbb lbc lbi lbk lbl lbo lbv lca lcb lcc lci lck lcl lco lcv lia lib lic lii lik lil lio liv lka lkb lkl lla llb llc lli llk lll llo llv loa lob loc loi lok lol loo lov lva lvb lvc lvi lvl lvv o-i oaa oab oac oai oak oal oao oav ob- oba obb obc obi obk obl obo obv oc- oca ocb occ oci ock ocl oco ocv oia oib oic oii oik oil oio oiv oka okb okc oki okk okl oko ola olb olc oli olk oll olo oo- ooa oob ooc ooi ook ool ooo oov ov- ova ovb ovc ovi ovl ovo ovv v-a vaa vab vac vai vak val vao vav vba vbc vbi vbk vbl vbo vbv vca vcc vci vcl vco vi- via vib vic vii vik vil vio viv vka vkb vl- vla vlb vlc vlk vll vlo vlv voa vob voc voi vok vol voo vov vva vvb vvc vvi vvo vvv