-al -ic a-a a-b a-c a-i aaa aab aac aai aak aal aas ab- aba abb abc abi abk abl abs ac- aca acb acc aci ack acl acs ai- aia aib aic aii aik ail ais aka akb akc aki akk akl aks al- ala alb alc ali alk all als as- asa asb asc asi ask asl ass baa bab bac bai bak bal bas bba bbb bbc bbi bbk bbl bbs bca bcb bcc bci bck bcl bcs bi- bia bib bic bii bik bil bis bka bkb bkc bkk bkl bks bla blb blc bli blk bll bls bsa bsb bsc bsi bsk bsl bss c-- caa cab cac cai cak cal cas cba cbb cbc cbi cbk cbl cbs cca ccb ccc cci cck ccl ccs ci- cia cib cic cii cik cil cis cka ckb ckc cki cks cl- cla clb clc cli clk cll cls csa csb csc csi csk csl css ia- iaa iab iac iai ial ias iba ibb ibc ibi ibk ibl ibs ica icb icc ici ick icl ics iia iib iic iii iil iis ika ikb ikc iki ikk ikl iks il- ila ilb ilc ili ilk ill ils is- isa isb isc isi isk isl iss ka- kaa kab kac kai kak kal kas kba kbb kbc kbi kbk kbl kbs kca kcb kcc kci kck kcl kcs kia kib kic kii kik kil kis kkb kkc kki kkk kkl kks kl- kla klb klc kli kls ksa ksb ksc ksi ksk ksl kss la- laa lab lac lai lak lal las lba lbb lbc lbi lbk lbl lbs lca lcb lcc lci lck lcl lcs lia lib lic lii lik lil lis lka lkb lkl lks lla llb llc lli llk lll lls lsa lsb lsc lsi lsk lsl lss saa sab sac sai sak sal sas sba sbb sbc sbi sbk sbl sbs sca scb scc sci sck scl scs sia sib sic sii sik sil sis sk- ska skb skc ski skk skl sks sla slb slc sli slk sll sls ss- ssa ssb ssc ssi ssk ssl sss