-al -ol a-a a-b a-i aaa aab aai aak aal aao aar aas aav ab- aba abb abi abk abl abo abr abs abv ai- aia aib aii aik ail aio air ais aiv aka akb aki akk akl ako akr aks akv al- ala alb ali alk all alo alr als alv aoa aob aoi aok aol aoo aor aos aov ar- ara arb ari ark arl aro arr ars arv as- asa asb asi ask asl aso asr ass asv av- ava avb avi avk avl avo avr avs baa bab bai bak bal bao bar bas bav bba bbb bbi bbk bbl bbo bbr bbs bi- bia bib bii bik bil bio bir bis biv bka bkb bkk bkl bko bkr bks bkv bla blb bli blk bll blo blr bls blv boa bob boi bok bol boo bor bos bov bra brb bri brk brl bro brr brs brv bsa bsb bsi bsk bsl bso bsr bss bsv bva bvb bvi bvk bvl bvo bvr bvs bvv i-v ia- iaa iab iai ial iao iar ias iav iba ibb ibi ibk ibl ibo ibr ibs ibv iia iib iii iil iio iir iis ika ikb iki ikk ikl iko ikr iks ikv il- ila ilb ili ilk ill ilo ilr ils ilv io- ioa iob ioi iol ioo ior ios iov ir- ira irb iri irk irl iro irr irs irv is- isa isb isi isk isl iso isr iss isv iva ivb ivi ivl ivo ivr ivs ivv ka- kaa kab kai kak kal kao kar kas kav kba kbb kbi kbk kbl kbo kbr kbs kia kib kii kik kil kio kir kis kiv kkb kki kkk kkl kkr kks kkv kl- kla klb kli klo klr kls klv koa kob koi kok kol koo kor kos kra kri krk krl kro krr krs krv ksa ksb ksi ksk ksl kso ksr kss ksv kva kvb kvi kvk kvo kvr kvs kvv la- laa lab lai lak lal lao lar las lav lba lbb lbi lbk lbl lbo lbr lbs lbv lia lib lii lik lil lio lir lis liv lka lkb lkl lkr lks lla llb lli llk lll llo llr lls llv loa lob loi lok lol loo lor los lov lra lrb lri lrk lro lrr lrs lrv lsa lsb lsi lsk lsl lso lsr lss lsv lva lvb lvi lvl lvr lvs lvv o-i oaa oab oai oak oal oao oar oas oav ob- oba obb obi obk obl obo obr obs obv oia oib oii oik oil oio oir ois oiv oka okb oki okk okl oko okr oks ola olb oli olk oll olo ols oo- ooa oob ooi ook ool ooo oor oos oov or- ora orb ori ork orl oro orr ors orv os- osa osb osi osk osl oso osr oss osv ov- ova ovb ovi ovl ovo ovs ovv ra- raa rab rai rak ral rao rar ras rav rba rbb rbi rbk rbl rbo rbr rbs ria rib rii rik ril rio rir ris riv rkb rkk rko rks rkv rla rli rll rlo rlr rls roa rob roi rok rol roo ror ros rov rra rrb rri rrk rrl rrr rrs rsa rsb rsi rsk rsl rso rsr rss rsv rva rvb rvi rvl rvo rvr rvs rvv saa sab sai sak sal sao sar sas sav sba sbb sbi sbk sbl sbo sbr sbs sbv sia sib sii sik sil sio sir sis siv sk- ska skb ski skk skl sko skr sks sla slb sli slk sll slo slr sls slv soa sob soi sok sol soo sor sos sov sr- sra srb sri srk srl sro srr srs srv ss- ssa ssb ssi ssk ssl sso ssr sss ssv sva svb svi svk svl svo svr svs svv v-a vaa vab vai vak val vao var vas vav vba vbi vbk vbl vbo vbr vbs vbv vi- via vib vii vik vil vio vir vis viv vka vkb vl- vla vlb vlk vll vlo vls vlv voa vob voi vok vol voo vor vos vov vra vrb vri vrk vrr vrs vsa vsb vsi vsk vsl vso vsr vss vsv vva vvb vvi vvo vvr vvs vvv