-al -er -ic a-a a-b a-c a-i a-t aaa aab aac aae aai aak aal aar aas aat ab- aba abb abc abe abi abk abl abr abs abt ac- aca acb acc ace aci ack acl acr acs act aea aeb aec aee aei aek ael aer aes aet ai- aia aib aic aie aii aik ail air ais ait aka akb akc ake aki akk akl akr aks al- ala alb alc ale ali alk all alr als alt ar- ara arb arc are ari ark arl arr ars art as- asa asb asc ase asi ask asl asr ass ast at- ata atb atc ate ati atl atr ats att baa bab bac bae bai bak bal bar bas bat bba bbb bbc bbe bbi bbk bbl bbr bbs bbt bca bcb bcc bce bci bck bcl bcr bcs bct be- bea beb bec bee bei bek bel ber bes bet bi- bia bib bic bie bii bik bil bir bis bit bka bkb bkc bke bkk bkl bkr bks bkt bla blb blc ble bli blk bll blr bls blt bra brb bre bri brk brl brr brs brt bsa bsb bsc bse bsi bsk bsl bsr bss bst bta btb btc bte bti btk btl btr bts btt c-- caa cab cac cae cai cak cal car cas cat cba cbb cbc cbe cbi cbk cbl cbr cbs cbt cca ccb ccc cce cci cck ccl ccr ccs cct ce- cea ceb cec cee cei cek cel cer ces cet ci- cia cib cic cie cii cik cil cir cis cit cka ckb ckc cki cks ckt cl- cla clb clc cle cli clk cll clr cls clt cra crb crc cre cri crk crl crr crs crt csa csb csc cse csi csk csl csr css cst cta ctb ctc cte cti ctk ctl ctr cts ctt eaa eab eac eae eai eak eal ear eas eat eba ebb ebc ebe ebi ebk ebl ebr ebs ebt ec- eca ecb ecc ece eci eck ecl ecr ecs ect eea eeb eec eee eek eel eer ees eet eia eib eic eie eii eik eil eir eis eit eka ekb ekc eke eki ekl ekr eks ekt ela elb elc ele eli elk ell elr els elt era erb erc ere eri erk erl err ers ert es- esa esb esc ese esi esk esl esr ess est eta etb etc ete eti etk etl etr ets ett ia- iaa iab iac iae iai ial iar ias iat iba ibb ibc ibe ibi ibk ibl ibr ibs ibt ica icb icc ice ici ick icl icr ics ict ie- iea iec iee iei iek iel ier ies iet iia iib iic iie iii iil iir iis iit ika ikb ikc ike iki ikk ikl ikr iks ikt il- ila ilb ilc ile ili ilk ill ilr ils ilt ir- ira irb irc ire iri irk irl irr irs irt is- isa isb isc ise isi isk isl isr iss ist ita itb itc ite iti itk itl its itt k-t ka- kaa kab kac kae kai kak kal kar kas kat kba kbb kbc kbe kbi kbk kbl kbr kbs kca kcb kcc kce kci kck kcl kcr kcs kct ke- kea keb kec kee kei kek kel ker kes ket kia kib kic kie kii kik kil kir kis kit kkb kkc kke kki kkk kkl kkr kks kkt kl- kla klb klc kli klr kls klt kra krc kri krk krl krr krs krt ksa ksb ksc kse ksi ksk ksl ksr kss kst kta ktb ktc kte ktk ktl ktr kts ktt la- laa lab lac lae lai lak lal lar las lat lba lbb lbc lbe lbi lbk lbl lbr lbs lbt lca lcb lcc lce lci lck lcl lcr lcs lct lea leb lec lee lei lek lel ler les let lia lib lic lie lii lik lil lir lis lit lka lkb lkl lkr lks lkt lla llb llc lle lli llk lll llr lls llt lra lrb lrc lri lrk lrr lrs lrt lsa lsb lsc lse lsi lsk lsl lsr lss lst lta ltb ltc lte lti ltk ltl ltr lts ltt ra- raa rab rac rae rai rak ral rar ras rat rba rbb rbc rbe rbi rbk rbl rbr rbs rbt rca rcb rcc rce rci rcl rcr rcs rct re- rea reb rec ree rei rek rel rer res ret ria rib ric rie rii rik ril rir ris rit rkb rkc rke rkk rks rkt rla rlc rle rli rll rlr rls rlt rra rrb rrc rri rrk rrl rrr rrs rrt rsa rsb rsc rse rsi rsk rsl rsr rss rst rta rtb rtc rte rti rtk rtl rtr rts rtt saa sab sac sae sai sak sal sar sas sat sba sbb sbc sbe sbi sbk sbl sbr sbs sbt sca scb scc sce sci sck scl scr scs sct se- sea seb sec see sei sek sel ser ses set sia sib sic sie sii sik sil sir sis sit sk- ska skb skc ske ski skk skl skr sks skt sla slb slc sle sli slk sll slr sls slt sr- sra srb src sre sri srk srl srr srs srt ss- ssa ssb ssc sse ssi ssk ssl ssr sss sst sta stb stc ste sti stk stl str sts stt taa tab tac tae tai tak tal tar tas tat tba tbb tbc tbe tbi tbk tbl tbr tbs tbt tca tcb tcc tce tci tck tcl tcr tcs tct te- tea teb tec tee tei tek tel ter tes tet tia tib tic tie tii tik til tir tis tit tka tkb tkc tke tkk tkl tkr tks tkt tla tlc tle tli tlk tll tlr tls tlt tra trb trc tre tri trk trl trr trs trt tsa tsb tsc tse tsi tsk tsl tsr tss tst tta ttb ttc tte tti ttk ttl ttr