-al -er -ic a-a a-b a-c a-i a-t aaa aab aac aae aag aai aal aar aas aat ab- aba abb abc abe abg abi abl abr abs abt ac- aca acb acc ace acg aci acl acr acs act aea aeb aec aee aeg aei ael aer aes aet ag- aga agb agc age agg agi agl agr ags agt ai- aia aib aic aie aig aii ail air ais ait al- ala alb alc ale alg ali all alr als alt ar- ara arb arc are arg ari arl arr ars art as- asa asb asc ase asg asi asl asr ass ast at- ata atb atc ate atg ati atl atr ats att baa bab bac bae bag bai bal bar bas bat bba bbb bbc bbe bbg bbi bbl bbr bbs bbt bca bcb bcc bce bcg bci bcl bcr bcs bct be- bea beb bec bee beg bei bel ber bes bet bga bgb bgc bge bgg bgi bgl bgr bgs bgt bi- bia bib bic bie big bii bil bir bis bit bla blb blc ble blg bli bll blr bls blt bra brb bre brg bri brl brr brs brt bsa bsb bsc bse bsg bsi bsl bsr bss bst bta btb btc bte btg bti btl btr bts btt c-- caa cab cac cae cag cai cal car cas cat cba cbb cbc cbe cbg cbi cbl cbr cbs cbt cca ccb ccc cce ccg cci ccl ccr ccs cct ce- cea ceb cec cee ceg cei cel cer ces cet cga cgb cgc cge cgg cgi cgl cgr cgs cgt ci- cia cib cic cie cig cii cil cir cis cit cl- cla clb clc cle clg cli cll clr cls clt cra crb crc cre crg cri crl crr crs crt csa csb csc cse csg csi csl csr css cst cta ctb ctc cte ctg cti ctl ctr cts ctt eaa eab eac eae eag eai eal ear eas eat eba ebb ebc ebe ebg ebi ebl ebr ebs ebt ec- eca ecb ecc ece ecg eci ecl ecr ecs ect eea eeb eec eee eeg eel eer ees eet ega egb egc ege egg egi egl egr egs egt eia eib eic eie eig eii eil eir eis eit ela elb elc ele elg eli ell elr els elt era erb erc ere erg eri erl err ers ert es- esa esb esc ese esg esi esl esr ess est eta etb etc ete etg eti etl etr ets ett gaa gab gac gae gag gai gal gar gas gat gba gbc gbe gbg gbi gbl gbr gbs gbt gca gcb gcc gce gcg gci gcl gcr gcs gct ge- gea geb gec gee geg gei gel ger ges get gga ggb ggc ggg ggi ggr ggs ggt gia gib gic gie gig gii gil gir gis git gla glb glc gle glg gli gll glr gls glt gra grb grc gre grg gri grl grr grs grt gsa gsb gsc gse gsg gsi gsl gsr gss gst gta gtb gtc gte gtg gti gtl gtr gts gtt ia- iaa iab iac iae iag iai ial iar ias iat iba ibb ibc ibe ibg ibi ibl ibr ibs ibt ica icb icc ice icg ici icl icr ics ict ie- iea iec iee ieg iei iel ier ies iet iga igb igc ige igg igi igl igr igs igt iia iib iic iie iii iil iir iis iit il- ila ilb ilc ile ilg ili ill ilr ils ilt ir- ira irb irc ire irg iri irl irr irs irt is- isa isb isc ise isg isi isl isr iss ist ita itb itc ite itg iti itl its itt la- laa lab lac lae lag lai lal lar las lat lba lbb lbc lbe lbg lbi lbl lbr lbs lbt lca lcb lcc lce lcg lci lcl lcr lcs lct lea leb lec lee leg lei lel ler les let lga lgb lgc lge lgg lgi lgl lgr lgs lgt lia lib lic lie lig lii lil lir lis lit lla llb llc lle llg lli lll llr lls llt lra lrb lrc lrg lri lrr lrs lrt lsa lsb lsc lse lsg lsi lsl lsr lss lst lta ltb ltc lte ltg lti ltl ltr lts ltt ra- raa rab rac rae rag rai ral rar ras rat rba rbb rbc rbe rbg rbi rbl rbr rbs rbt rca rcb rcc rce rcg rci rcl rcr rcs rct re- rea reb rec ree reg rei rel rer res ret rga rgb rgc rge rgg rgi rgr rgs rgt ria rib ric rie rig rii ril rir ris rit rla rlc rle rlg rli rll rlr rls rlt rra rrb rrc rrg rri rrl rrr rrs rrt rsa rsb rsc rse rsg rsi rsl rsr rss rst rta rtb rtc rte rtg rti rtl rtr rts rtt saa sab sac sae sag sai sal sar sas sat sba sbb sbc sbe sbg sbi sbl sbr sbs sbt sca scb scc sce scg sci scl scr scs sct se- sea seb sec see seg sei sel ser ses set sga sgb sgc sge sgg sgi sgl sgr sgs sgt sia sib sic sie sig sii sil sir sis sit sla slb slc sle slg sli sll slr sls slt sr- sra srb src sre srg sri srl srr srs srt ss- ssa ssb ssc sse ssg ssi ssl ssr sss sst sta stb stc ste stg sti stl str sts stt taa tab tac tae tag tai tal tar tas tat tba tbb tbc tbe tbg tbi tbl tbr tbs tbt tca tcb tcc tce tcg tci tcl tcr tcs tct te- tea teb tec tee teg tei tel ter tes tet tga tgb tgc tge tgg tgi tgl tgr tgs tgt tia tib tic tie tig tii til tir tis tit tla tlc tle tlg tli tll tlr tls tlt tra trb trc tre trg tri trl