-al -ol a-a a-b a-t aaa aab aae aag aal aao aas aat ab- aba abb abe abg abl abo abs abt aea aeb aee aeg ael aeo aes aet ag- aga agb age agg agl ago ags agt al- ala alb ale alg all alo als alt aoa aob aoe aog aol aoo aos aot as- asa asb ase asg asl aso ass ast at- ata atb ate atg atl ato ats att baa bab bae bag bal bao bas bat bba bbb bbe bbg bbl bbo bbs bbt be- bea beb bee beg bel beo bes bet bga bgb bge bgg bgl bgo bgs bgt bla blb ble blg bll blo bls blt boa bob boe bog bol boo bos bot bsa bsb bse bsg bsl bso bss bst bta btb bte btg btl bto bts btt eaa eab eae eag eal eao eas eat eba ebb ebe ebg ebl ebo ebs ebt eea eeb eee eeg eel eeo ees eet ega egb ege egg egl ego egs egt ela elb ele elg ell elo els elt eo- eoa eob eoe eog eol eoo eos eot es- esa esb ese esg esl eso ess est eta etb ete etg etl eto ets ett gaa gab gae gag gal gao gas gat gba gbe gbg gbl gbo gbs gbt ge- gea geb gee geg gel geo ges get gga ggb ggg ggo ggs ggt gla glb gle glg gll glo gls glt goa gob goe gog gol goo gos got gsa gsb gse gsg gsl gso gss gst gta gtb gte gtg gtl gto gts gtt la- laa lab lae lag lal lao las lat lba lbb lbe lbg lbl lbo lbs lbt lea leb lee leg lel leo les let lga lgb lge lgg lgl lgo lgs lgt lla llb lle llg lll llo lls llt loa lob loe log lol loo los lot lsa lsb lse lsg lsl lso lss lst lta ltb lte ltg ltl lto lts ltt oaa oab oae oag oal oao oas oat ob- oba obb obe obg obl obo obs obt oea oeb oee oeg oel oeo oes oet oga oge ogg ogl ogo ogs ogt ola olb ole olg oll olo ols olt oo- ooa oob oog ool ooo oos oot os- osa osb ose osg osl oso oss ost ot- ota otb ote otg otl oto ots ott saa sab sae sag sal sao sas sat sba sbb sbe sbg sbl sbo sbs sbt se- sea seb see seg sel seo ses set sga sgb sge sgg sgl sgo sgs sgt sla slb sle slg sll slo sls slt soa sob soe sog sol soo sos sot ss- ssa ssb sse ssg ssl sso sss sst sta stb ste stg stl sto sts stt taa tab tae tag tal tao tas tat tba tbb tbe tbg tbl tbo tbs tbt te- tea teb tee teg tel teo tes tet tga tgb tge tgg tgl tgo tgs tgt tla tle tlg tll tlo tls tlt to- toa tob toe tog tol too tos tot tsa tsb tse tsg tsl tso tss tst tta ttb tte ttg ttl tto tts ttt