-al -ic a-a a-b a-c a-i a-t aaa aab aac aai aak aal aas aat ab- aba abb abc abi abk abl abs abt ac- aca acb acc aci ack acl acs act ai- aia aib aic aii aik ail ais ait aka akb akc aki akk akl aks al- ala alb alc ali alk all als alt as- asa asb asc asi ask asl ass ast at- ata atb atc ati atl ats att baa bab bac bai bak bal bas bat bba bbb bbc bbi bbk bbl bbs bbt bca bcb bcc bci bck bcl bcs bct bi- bia bib bic bii bik bil bis bit bka bkb bkc bkk bkl bks bkt bla blb blc bli blk bll bls blt bsa bsb bsc bsi bsk bsl bss bst bta btb btc bti btk btl bts btt c-- caa cab cac cai cak cal cas cat cba cbb cbc cbi cbk cbl cbs cbt cca ccb ccc cci cck ccl ccs cct ci- cia cib cic cii cik cil cis cit cka ckb ckc cki cks ckt cl- cla clb clc cli clk cll cls clt csa csb csc csi csk csl css cst cta ctb ctc cti ctk ctl cts ctt ia- iaa iab iac iai ial ias iat iba ibb ibc ibi ibk ibl ibs ibt ica icb icc ici ick icl ics ict iia iib iic iii iil iis iit ika ikb ikc iki ikk ikl iks ikt il- ila ilb ilc ili ilk ill ils ilt is- isa isb isc isi isk isl iss ist ita itb itc iti itk itl its itt k-t ka- kaa kab kac kai kak kal kas kat kba kbb kbc kbi kbk kbl kbs kca kcb kcc kci kck kcl kcs kct kia kib kic kii kik kil kis kit kkb kkc kki kkk kkl kks kkt kl- kla klb klc kli kls klt ksa ksb ksc ksi ksk ksl kss kst kta ktb ktc ktk ktl kts ktt la- laa lab lac lai lak lal las lat lba lbb lbc lbi lbk lbl lbs lbt lca lcb lcc lci lck lcl lcs lct lia lib lic lii lik lil lis lit lka lkb lkl lks lkt lla llb llc lli llk lll lls llt lsa lsb lsc lsi lsk lsl lss lst lta ltb ltc lti ltk ltl lts ltt saa sab sac sai sak sal sas sat sba sbb sbc sbi sbk sbl sbs sbt sca scb scc sci sck scl scs sct sia sib sic sii sik sil sis sit sk- ska skb skc ski skk skl sks skt sla slb slc sli slk sll sls slt ss- ssa ssb ssc ssi ssk ssl sss sst sta stb stc sti stk stl sts stt taa tab tac tai tak tal tas tat tba tbb tbc tbi tbk tbl tbs tbt tca tcb tcc tci tck tcl tcs tct tia tib tic tii tik til tis tit tka tkb tkc tkk tkl tks tkt tla tlc tli tlk tll tls tlt tsa tsb tsc tsi tsk tsl tss tst tta ttb ttc tti ttk ttl tts ttt