-al -ic a-a a-b a-c a-i a-t aaa aab aac aai aak aal aar aas aat ab- aba abb abc abi abk abl abr abs abt ac- aca acb acc aci ack acl acr acs act ai- aia aib aic aii aik ail air ais ait aka akb akc aki akk akl akr aks al- ala alb alc ali alk all alr als alt ar- ara arb arc ari ark arl arr ars art as- asa asb asc asi ask asl asr ass ast at- ata atb atc ati atl atr ats att baa bab bac bai bak bal bar bas bat bba bbb bbc bbi bbk bbl bbr bbs bbt bca bcb bcc bci bck bcl bcr bcs bct bi- bia bib bic bii bik bil bir bis bit bka bkb bkc bkk bkl bkr bks bkt bla blb blc bli blk bll blr bls blt bra brb bri brk brl brr brs brt bsa bsb bsc bsi bsk bsl bsr bss bst bta btb btc bti btk btl btr bts btt c-- caa cab cac cai cak cal car cas cat cba cbb cbc cbi cbk cbl cbr cbs cbt cca ccb ccc cci cck ccl ccr ccs cct ci- cia cib cic cii cik cil cir cis cit cka ckb ckc cki cks ckt cl- cla clb clc cli clk cll clr cls clt cra crb crc cri crk crl crr crs crt csa csb csc csi csk csl csr css cst cta ctb ctc cti ctk ctl ctr cts ctt ia- iaa iab iac iai ial iar ias iat iba ibb ibc ibi ibk ibl ibr ibs ibt ica icb icc ici ick icl icr ics ict iia iib iic iii iil iir iis iit ika ikb ikc iki ikk ikl ikr iks ikt il- ila ilb ilc ili ilk ill ilr ils ilt ir- ira irb irc iri irk irl irr irs irt is- isa isb isc isi isk isl isr iss ist ita itb itc iti itk itl its itt k-t ka- kaa kab kac kai kak kal kar kas kat kba kbb kbc kbi kbk kbl kbr kbs kca kcb kcc kci kck kcl kcr kcs kct kia kib kic kii kik kil kir kis kit kkb kkc 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 ksi ksk ksl ksr kss kst kta ktb ktc ktk ktl ktr kts ktt la- laa lab lac lai lak lal lar las lat lba lbb lbc lbi lbk lbl lbr lbs lbt lca lcb lcc lci lck lcl lcr lcs lct lia lib lic lii lik lil lir lis lit lka lkb lkl lkr lks lkt lla llb llc lli llk lll llr lls llt lra lrb lrc lri lrk lrr lrs lrt lsa lsb lsc lsi lsk lsl lsr lss lst lta ltb ltc lti ltk ltl ltr lts ltt ra- raa rab rac rai rak ral rar ras rat rba rbb rbc rbi rbk rbl rbr rbs rbt rca rcb rcc rci rcl rcr rcs rct ria rib ric rii rik ril rir ris rit rkb rkc rkk rks rkt rla rlc rli rll rlr rls rlt rra rrb rrc rri rrk rrl rrr rrs rrt rsa rsb rsc rsi rsk rsl rsr rss rst rta rtb rtc rti rtk rtl rtr rts rtt saa sab sac sai sak sal sar sas sat sba sbb sbc sbi sbk sbl sbr sbs sbt sca scb scc sci sck scl scr scs sct sia sib sic sii sik sil sir sis sit sk- ska skb skc ski skk skl skr sks skt sla slb slc sli slk sll slr sls slt sr- sra srb src sri srk srl srr srs srt ss- ssa ssb ssc ssi ssk ssl ssr sss sst sta stb stc sti stk stl str sts stt taa tab tac tai tak tal tar tas tat tba tbb tbc tbi tbk tbl tbr tbs tbt tca tcb tcc tci tck tcl tcr tcs tct tia tib tic tii tik til tir tis tit tka tkb tkc tkk tkl tkr tks tkt tla tlc tli tlk tll tlr tls tlt tra trb trc tri trk trl trr trs trt tsa tsb tsc tsi tsk tsl tsr tss tst tta ttb ttc tti ttk ttl ttr tts ttt

a-ak a-ii aaaa aaab aaac aaai aaal aaar aaas aaba aabb aabc aabi aabl aabt aaca aacb aacc aaci aack aacl aacr aacs aact aaib aaic aaii aais aaka aala aalc aali aall aals aara aarc aari aars aart aasa aasc aasi aass aast aata aatc aatk aatt abaa abab abac abai abak abal abar abas abat abb- abba abbb abbi abbr abbs abbt abca abcb abcc abci abcl abcr abcs abct abia abib abic abil abir abis abit abla abls abra abrc abri abrs abs- absa absi absl abss abta abts ac-t acaa acab acac acai acar acas acat acba acbl acca accc acci accs acct aci- acia acic acir acis acks acla aclc acli aclr acls acr- acra acrc acri acrr acrs acsa acsc acsi acsl acss acst acta actc acti actl acts actt aiai aias aiba aibl aica aicc aicr aics aiia aiib aiic aiir aika aiki aiks aila aili ails aira airi airs airt aisa aisb aisi aisk aisl aisr aist aita aiti aitr aits aitt akaa akai akal akar akas akca akia akik akil akir akis akka akki akr- akra aksa aksi akst alaa alac alai alak alal alar alas alat alb- alba albc albi albs alca alcc alcs ali- alia alib alii alik alil alir alis alit alk- alka alkb alki all- alla alli alll allr alls alsa alsc alst alta alti alts arab arac arai arak aral arar aras arat arba arbi arbs arc- arca arci arcs arct aria arib arii arik aril aris arit arka arki arks arla arli arr- arra arrc arri arrk arrr arrs arrt ars- arsa arsc arsi arsk