-al -ic -ol a-a a-b a-c a-i a-t aaa aab aac aai aak aal aao aat ab- aba abb abc abi abk abl abo abt ac- aca acb acc aci ack acl aco act ai- aia aib aic aii aik ail aio ait aka akb akc aki akk akl ako al- ala alb alc ali alk all alo alt aoa aob aoc aoi aok aol aoo aot at- ata atb atc ati atl ato att baa bab bac bai bak bal bao bat bba bbb bbc bbi bbk bbl bbo bbt bca bcb bcc bci bck bcl bco bct bi- bia bib bic bii bik bil bio bit bka bkb bkc bkk bkl bko bkt bla blb blc bli blk bll blo blt boa bob boc boi bok bol boo bot bta btb btc bti btk btl bto btt c-- caa cab cac cai cak cal cao cat cba cbb cbc cbi cbk cbl cbo cbt cca ccb ccc cci cck ccl cco cct ci- cia cib cic cii cik cil cio cit cka ckb ckc cki cko ckt cl- cla clb clc cli clk cll clo clt co- coa cob coc coi cok col coo cot cta ctb ctc cti ctk ctl cto ctt ia- iaa iab iac iai ial iao iat iba ibb ibc ibi ibk ibl ibo ibt ica icb icc ici ick icl ico ict iia iib iic iii iil iio iit ika ikb ikc iki ikk ikl iko ikt il- ila ilb ilc ili ilk ill ilo ilt io- ioa iob ioc ioi iol ioo iot ita itb itc iti itk itl ito itt k-t ka- kaa kab kac kai kak kal kao kat kba kbb kbc kbi kbk kbl kbo kca kcb kcc kci kck kcl kct kia kib kic kii kik kil kio kit kkb kkc kki kkk kkl kkt kl- kla klb klc kli klo klt koa kob koc koi kok kol koo kot kta ktb ktc ktk ktl kto ktt la- laa lab lac lai lak lal lao lat lba lbb lbc lbi lbk lbl lbo lbt lca lcb lcc lci lck lcl lco lct lia lib lic lii lik lil lio lit lka lkb lkl lkt lla llb llc lli llk lll llo llt loa lob loc loi lok lol loo lot lta ltb ltc lti ltk ltl lto ltt o-i oaa oab oac oai oak oal oao oat ob- oba obb obc obi obk obl obo obt oc- oca ocb occ oci ock ocl oco oct oia oib oic oii oik oil oio oit oka okb okc oki okk okl oko ola olb olc oli olk oll olo olt oo- ooa oob ooc ooi ook ool ooo oot ot- ota otb otc oti otk otl oto ott taa tab tac tai tak tal tao tat tba tbb tbc tbi tbk tbl tbo tbt tca tcb tcc tci tck tcl tco tct tia tib tic tii tik til tio tit tka tkb tkc tkk tkl tko tkt tla tlc tli tlk tll tlo tlt to- toa tob toc toi tok tol too tot tta ttb ttc tti ttk ttl tto ttt