-al -ic a-a a-b a-c a-i aaa aab aac aag aai aak aal aar aas ab- aba abb abc abg abi abk abl abr abs ac- aca acb acc acg aci ack acl acr acs ag- aga agb agc agg agi agk agl agr ags ai- aia aib aic aig aii aik ail air ais aka akb akc akg aki akk akl akr aks al- ala alb alc alg ali alk all alr als ar- ara arb arc arg ari ark arl arr ars as- asa asb asc asg asi ask asl asr ass baa bab bac bag bai bak bal bar bas bba bbb bbc bbg bbi bbk bbl bbr bbs bca bcb bcc bcg bci bck bcl bcr bcs bga bgb bgc bgg bgi bgk bgl bgr bgs bi- bia bib bic big bii bik bil bir bis bka bkb bkc bkg bkk bkl bkr bks bla blb blc blg bli blk bll blr bls bra brb brg bri brk brl brr brs bsa bsb bsc bsg bsi bsk bsl bsr bss c-- caa cab cac cag cai cak cal car cas cba cbb cbc cbg cbi cbk cbl cbr cbs cca ccb ccc ccg cci cck ccl ccr ccs cga cgb cgc cgg cgi cgl cgr cgs ci- cia cib cic cig cii cik cil cir cis cka ckb ckc cki cks cl- cla clb clc clg cli clk cll clr cls cra crb crc crg cri crk crl crr crs csa csb csc csg csi csk csl csr css gaa gab gac gag gai gak gal gar gas gba gbc gbg gbi gbk gbl gbr gbs gca gcb gcc gcg gci gck gcl gcr gcs gga ggb ggc ggg ggi ggr ggs gia gib gic gig gii gik gil gir gis gka gkb gks gla glb glc glg gli glk gll glr gls gra grb grc grg gri grk grl grr grs gsa gsb gsc gsg gsi gsk gsl gsr gss ia- iaa iab iac iag iai ial iar ias iba ibb ibc ibg ibi ibk ibl ibr ibs ica icb icc icg ici ick icl icr ics iga igb igc igg igi igk igl igr igs iia iib iic iii iil iir iis ika ikb ikc iki ikk ikl ikr iks il- ila ilb ilc ilg ili ilk ill ilr ils ir- ira irb irc irg iri irk irl irr irs is- isa isb isc isg isi isk isl isr iss ka- kaa kab kac kag kai kak kal kar kas kba kbb kbc kbi kbk kbl kbr kbs kca kcb kcc kcg kci kck kcl kcr kcs kga kgb kgc kgi kgl kgs kia kib kic kig kii kik kil kir kis kkb kkc kki kkk kkl kkr kks kl- kla klb klc klg kli klr kls kra krc krg kri krk krl krr krs ksa ksb ksc ksg ksi ksk ksl ksr kss la- laa lab lac lag lai lak lal lar las lba lbb lbc lbg lbi lbk lbl lbr lbs lca lcb lcc lcg lci lck lcl lcr lcs lga lgb lgc lgg lgi lgk lgl lgr lgs lia lib lic lig lii lik lil lir lis lka lkb lkg lkl lkr lks lla llb llc llg lli llk lll llr lls lra lrb lrc lrg lri lrk lrr lrs lsa lsb lsc lsg lsi lsk lsl lsr lss ra- raa rab rac rag rai rak ral rar ras rba rbb rbc rbg rbi rbk rbl rbr rbs rca rcb rcc rcg rci rcl rcr rcs rga rgb rgc rgg rgi rgk rgr rgs ria rib ric rig rii rik ril rir ris rkb rkc rkg rkk rks rla rlc rlg rli rll rlr rls rra rrb rrc rrg rri rrk rrl rrr rrs rsa rsb rsc rsg rsi rsk rsl rsr rss saa sab sac sag sai sak sal sar sas sba sbb sbc sbg sbi sbk sbl sbr sbs sca scb scc scg sci sck scl scr scs sga sgb sgc sgg sgi sgk sgl sgr sgs sia sib sic sig sii sik sil sir sis sk- ska skb skc skg ski skk skl skr sks sla slb slc slg sli slk sll slr sls sr- sra srb src srg sri srk srl srr srs ss- ssa ssb ssc ssg ssi ssk ssl ssr sss

a-ak a-ii aaaa aaab aaac aaai aaal aaar aaas aaba aabb aabc aabi aabl aaca aacb aacc aaci aack aacl aacr aacs aaib aaic aaii aais aaka aala aalc aali aall aals aara aarc aari aars aasa aasc aasi aass abaa abab abac abag abai abak abal abar abas abb- abba abbb abbi abbr abbs abca abcb abcc abci abcl abcr abcs abgl abia abib abic abig abil abir abis abla abls abra abrc abri abrs abs- absa absi absl abss acaa acab acac acag acai acar acas acba acbl acca accc acci accs acga acgi acgr acgs aci- acia acic acir acis acks acla aclc acli aclr acls acr- acra acrc acri acrr acrs acsa acsc acsi acsl acss agac agag agai agal agar agas agba agca agcc agga aggi agia agib agic agig agii agil agir agis agla aglc agli agls agra agri agrl agsa agsg aiai aias aiba aibl aica aicc aicr aics aiga aiia aiib aiic aiir aika aiki aiks aila aili ails aira airi airs aisa aisb aisg aisi aisk aisl aisr akaa akai akal akar akas akca akia akik akil akir akis akka akki akr- akra aksa aksi alaa alac alag alai alak alal alar alas alb- alba albc albi albs alca alcc alcs alg- alga algi algs ali- alia alib alig alii alik alil alir alis alk- alka alkb alki all- alla alli alll allr alls alsa alsc arab arac arag arai arak aral arar aras arba arbi arbs arc- arca arci arcs arga argb argi args aria arib arig arii arik aril aris arka arki arks arla arli arr- arra arrc arrg arri arrk arrr arrs ars- arsa arsc arsi arsk asaa asab asac asag asai