-al -ic a-a a-b a-c a-i a-t aaa aab aac aai aak aal aat ab- aba abb abc abi abk abl abt ac- aca acb acc aci ack acl act ai- aia aib aic aii aik ail ait aka akb akc aki akk akl al- ala alb alc ali alk all alt at- ata atb atc ati atl att baa bab bac bai bak bal bat bba bbb bbc bbi bbk bbl bbt bca bcb bcc bci bck bcl bct bi- bia bib bic bii bik bil bit bka bkb bkc bkk bkl bkt bla blb blc bli blk bll blt bta btb btc bti btk btl btt c-- caa cab cac cai cak cal cat cba cbb cbc cbi cbk cbl cbt cca ccb ccc cci cck ccl cct ci- cia cib cic cii cik cil cit cka ckb ckc cki ckt cl- cla clb clc cli clk cll clt cta ctb ctc cti ctk ctl ctt ia- iaa iab iac iai ial iat iba ibb ibc ibi ibk ibl ibt ica icb icc ici ick icl ict iia iib iic iii iil iit ika ikb ikc iki ikk ikl ikt il- ila ilb ilc ili ilk ill ilt ita itb itc iti itk itl itt k-t ka- kaa kab kac kai kak kal kat kba kbb kbc kbi kbk kbl kca kcb kcc kci kck kcl kct kia kib kic kii kik kil kit kkb kkc kki kkk kkl kkt kl- kla klb klc kli klt kta ktb ktc ktk ktl ktt la- laa lab lac lai lak lal lat lba lbb lbc lbi lbk lbl lbt lca lcb lcc lci lck lcl lct lia lib lic lii lik lil lit lka lkb lkl lkt lla llb llc lli llk lll llt lta ltb ltc lti ltk ltl ltt taa tab tac tai tak tal tat tba tbb tbc tbi tbk tbl tbt tca tcb tcc tci tck tcl tct tia tib tic tii tik til tit tka tkb tkc tkk tkl tkt tla tlc tli tlk tll tlt tta ttb ttc tti ttk ttl ttt