-al -ic a-a a-b a-c a-i a-t aaa aab aac aaf aai aak aal aas aat ab- aba abb abc abf abi abk abl abs abt ac- aca acb acc acf aci ack acl acs act af- afa afb afc aff afi afk afl afs aft ai- aia aib aic aif aii aik ail ais ait aka akb akc aki akk akl aks al- ala alb alc alf ali alk all als alt as- asa asb asc asf asi ask asl ass ast at- ata atb atc atf ati atl ats att baa bab bac baf bai bak bal bas bat bba bbb bbc bbf bbi bbk bbl bbs bbt bca bcb bcc bcf bci bck bcl bcs bct bfa bfb bfc bff bfi bfl bfs bft bi- bia bib bic bif bii bik bil bis bit bka bkb bkc bkf bkk bkl bks bkt bla blb blc blf bli blk bll bls blt bsa bsb bsc bsf bsi bsk bsl bss bst bta btb btc btf bti btk btl bts btt c-- caa cab cac caf cai cak cal cas cat cba cbb cbc cbf cbi cbk cbl cbs cbt cca ccb ccc ccf cci cck ccl ccs cct cfa cfb cfc cff cfi cfk cfl cfs cft ci- cia cib cic cif cii cik cil cis cit cka ckb ckc cki cks ckt cl- cla clb clc clf cli clk cll cls clt csa csb csc csf csi csk csl css cst cta ctb ctc ctf cti ctk ctl cts ctt faa fab fac faf fai fak fal fas fat fba fbb fbc fbf fbi fbk fbl fbs fbt fca fcb fcc fcf fci fck fcl fcs fct ffa ffc fff ffi ffk ffl ffs fft fia fib fic fif fii fik fil fis fit fka fkb fkc fkf fki fkk fkl fkt fla flb flc flf fli fll fls flt fsa fsb fsc fsf fsi fsk fsl fss fst fta ftb ftc ftf fti ftk ftl fts ftt i-f ia- iaa iab iac iaf iai ial ias iat iba ibb ibc ibf ibi ibk ibl ibs ibt ica icb icc icf ici ick icl ics ict ifa ifb ifc iff ifi ifl ifs ift iia iib iic iif iii iil iis iit ika ikb ikc ikf iki ikk ikl iks ikt il- ila ilb ilc ilf ili ilk ill ils ilt is- isa isb isc isf isi isk isl iss ist ita itb itc itf iti itk itl its itt k-t ka- kaa kab kac kaf kai kak kal kas kat kba kbb kbc kbf kbi kbk kbl kbs kca kcb kcc kci kck kcl kcs kct kfa kfc kff kfi kfs kia kib kic kif kii kik kil kis kit kkb kkc kki kkk kkl kks kkt kl- kla klb klc klf kli kls klt ksa ksb ksc ksf ksi ksk ksl kss kst kta ktb ktc ktf ktk ktl kts ktt la- laa lab lac laf lai lak lal las lat lba lbb lbc lbf lbi lbk lbl lbs lbt lca lcb lcc lcf lci lck lcl lcs lct lfa lfb lfc lff lfi lfk lfl lfs lft lia lib lic lif lii lik lil lis lit lka lkb lkl lks lkt lla llb llc llf lli llk lll lls llt lsa lsb lsc lsf lsi lsk lsl lss lst lta ltb ltc ltf lti ltk ltl lts ltt saa sab sac saf sai sak sal sas sat sba sbb sbc sbf sbi sbk sbl sbs sbt sca scb scc scf sci sck scl scs sct sfa sfb sfc sff sfi sfk sfl sfs sft sia sib sic sif sii sik sil sis sit sk- ska skb skc skf ski skk skl sks skt sla slb slc slf sli slk sll sls slt ss- ssa ssb ssc ssf ssi ssk ssl sss sst sta stb stc stf sti stk stl sts stt taa tab tac taf tai tak tal tas tat tba tbb tbc tbf tbi tbk tbl tbs tbt tca tcb tcc tcf tci tck tcl tcs tct tfa tfb tfc tff tfi tfk tfl tfs tft tia tib tic tif tii tik til tis tit tka tkb tkc tkk tkl tks tkt tla tlc tlf tli tlk tll tls tlt tsa tsb tsc tsf tsi tsk tsl tss tst tta ttb ttc ttf tti ttk ttl tts ttt