-al -ic a-a a-b a-c a-i a-t aaa aab aac aai aal aas aat ab- aba abb abc abi abl abs abt ac- aca acb acc aci acl acs act ai- aia aib aic aii ail ais ait al- ala alb alc ali all als alt as- asa asb asc asi asl ass ast at- ata atb atc ati atl ats att baa bab bac bai bal bas bat bba bbb bbc bbi bbl bbs bbt bca bcb bcc bci bcl bcs bct bi- bia bib bic bii bil bis bit bla blb blc bli bll bls blt bsa bsb bsc bsi bsl bss bst bta btb btc bti btl bts btt c-- caa cab cac cai cal cas cat cba cbb cbc cbi cbl cbs cbt cca ccb ccc cci ccl ccs cct ci- cia cib cic cii cil cis cit cl- cla clb clc cli cll cls clt csa csb csc csi csl css cst cta ctb ctc cti ctl cts ctt ia- iaa iab iac iai ial ias iat iba ibb ibc ibi ibl ibs ibt ica icb icc ici icl ics ict iia iib iic iii iil iis iit il- ila ilb ilc ili ill ils ilt is- isa isb isc isi isl iss ist ita itb itc iti itl its itt la- laa lab lac lai lal las lat lba lbb lbc lbi lbl lbs lbt lca lcb lcc lci lcl lcs lct lia lib lic lii lil lis lit lla llb llc lli lll lls llt lsa lsb lsc lsi lsl lss lst lta ltb ltc lti ltl lts ltt saa sab sac sai sal sas sat sba sbb sbc sbi sbl sbs sbt sca scb scc sci scl scs sct sia sib sic sii sil sis sit sla slb slc sli sll sls slt ss- ssa ssb ssc ssi ssl sss sst sta stb stc sti stl sts stt taa tab tac tai tal tas tat tba tbb tbc tbi tbl tbs tbt tca tcb tcc tci tcl tcs tct tia tib tic tii til tis tit tla tlc tli tll tls tlt tsa tsb tsc tsi tsl tss tst tta ttb ttc tti ttl tts ttt