-er -ic a-a a-b a-c a-i a-t aaa aab aac aae aag aai aao aar aas aat ab- aba abb abc abe abg abi abo abr abs abt ac- aca acb acc ace acg aci aco acr acs act aea aeb aec aee aeg aei aeo aer aes aet ag- aga agb agc age agg agi ago agr ags agt ai- aia aib aic aie aig aii aio air ais ait aoa aob aoc aoe aog aoi aoo aor aos aot ar- ara arb arc are arg ari aro arr ars art as- asa asb asc ase asg asi aso asr ass ast at- ata atb atc ate atg ati ato atr ats att baa bab bac bae bag bai bao bar bas bat bba bbb bbc bbe bbg bbi bbo bbr bbs bbt bca bcb bcc bce bcg bci bco bcr bcs bct be- bea beb bec bee beg bei beo ber bes bet bga bgb bgc bge bgg bgi bgo bgr bgs bgt bi- bia bib bic bie big bii bio bir bis bit boa bob boc boe bog boi boo bor bos bot bra brb bre brg bri bro brr brs brt bsa bsb bsc bse bsg bsi bso bsr bss bst bta btb btc bte btg bti bto btr bts btt c-- caa cab cac cae cag cai cao car cas cat cba cbb cbc cbe cbg cbi cbo cbr cbs cbt cca ccb ccc cce ccg cci cco ccr ccs cct ce- cea ceb cec cee ceg cei ceo cer ces cet cga cgb cgc cge cgg cgi cgo cgr cgs cgt ci- cia cib cic cie cig cii cio cir cis cit co- coa cob coc coe cog coi coo cor cos cot cra crb crc cre crg cri cro crr crs crt csa csb csc cse csg csi cso csr css cst cta ctb ctc cte ctg cti cto ctr cts ctt eaa eab eac eae eag eai eao ear eas eat eba ebb ebc ebe ebg ebi ebo ebr ebs ebt ec- eca ecb ecc ece ecg eci eco ecr ecs ect eea eeb eec eee eeg eeo eer ees eet ega egb egc ege egg egi ego egr egs egt eia eib eic eie eig eii eio eir eis eit eo- eoa eob eoc eoe eog eoi eoo eor eos eot era erb erc ere erg eri ero err ers ert es- esa esb esc ese esg esi eso esr ess est eta etb etc ete etg eti eto etr ets ett gaa gab gac gae gag gai gao gar gas gat gba gbc gbe gbg gbi gbo gbr gbs gbt gca gcb gcc gce gcg gci gco gcr gcs gct ge- gea geb gec gee geg gei geo ger ges get gga ggb ggc ggg ggi ggo ggr ggs ggt gia gib gic gie gig gii gio gir gis git goa gob goc goe gog goi goo gor gos got gra grb grc gre grg gri gro grr grs grt gsa gsb gsc gse gsg gsi gso gsr gss gst gta gtb gtc gte gtg gti gto gtr gts gtt ia- iaa iab iac iae iag iai iao iar ias iat iba ibb ibc ibe ibg ibi ibo ibr ibs ibt ica icb icc ice icg ici ico icr ics ict ie- iea iec iee ieg iei ier ies iet iga igb igc ige igg igi igo igr igs igt iia iib iic iie iii iio iir iis iit io- ioa iob ioc ioe iog ioi ioo ior ios iot ir- ira irb irc ire irg iri iro irr irs irt is- isa isb isc ise isg isi iso isr iss ist ita itb itc ite itg iti ito its itt o-i oaa oab oac oae oag oai oao oar oas oat ob- oba obb obc obe obg obi obo obr obs obt oc- oca ocb occ ocg oci oco ocr ocs oct oea oeb oec oee oeg oei oeo oer oes oet oga ogc oge ogg ogi ogo ogs ogt oia oib oic oie oii oio oir ois oit oo- ooa oob ooc oog ooi ooo oor oos oot or- ora orb orc ore org ori oro orr ors ort os- osa osb osc ose osg osi oso osr oss ost ot- ota otb otc ote otg oti oto otr ots ott ra- raa rab rac rae rag rai rao rar ras rat rba rbb rbc rbe rbg rbi rbo rbr rbs rbt rca rcb rcc rce rcg rci rco rcr rcs rct re- rea reb rec ree reg rei reo rer res ret rga rgb rgc rge rgg rgi rgo rgr rgs rgt ria rib ric rie rig rii rio rir ris rit roa rob roc roe rog roi roo ror ros rot rra rrb rrc rrg rri rrr rrs rrt rsa rsb rsc rse rsg rsi rso rsr rss rst rta rtb rtc rte rtg rti rto rtr rts rtt saa sab sac sae sag sai sao sar sas sat sba sbb sbc sbe sbg sbi sbo sbr sbs sbt sca scb scc sce scg sci sco scr scs sct se- sea seb sec see seg sei seo ser ses set sga sgb sgc sge sgg sgi sgo sgr sgs sgt sia sib sic sie sig sii sio sir sis sit soa sob soc soe sog soi soo sor sos sot sr- sra srb src sre srg sri sro srr srs srt ss- ssa ssb ssc sse ssg ssi sso ssr sss sst sta stb stc ste stg sti sto str sts stt taa tab tac tae tag tai tao tar tas tat tba tbb tbc tbe tbg tbi tbo tbr tbs tbt tca tcb tcc tce tcg tci tco tcr tcs tct te- tea teb tec tee teg tei teo ter tes tet tga tgb tgc tge tgg tgi tgo tgr tgs tgt tia tib tic tie tig tii tio tir tis tit to- toa tob toc toe tog toi too tor tos tot tra trb