-al -ol a-a a-b a-c a-t aaa aab aac aae aag aal aao aas aat ab- aba abb abc abe abg abl abo abs abt ac- aca acb acc ace acg acl aco acs act aea aeb aec aee aeg ael aeo aes aet ag- aga agb agc age agg agl ago ags agt al- ala alb alc ale alg all alo als alt aoa aob aoc aoe aog aol aoo aos aot as- asa asb asc ase asg asl aso ass ast at- ata atb atc ate atg atl ato ats att baa bab bac bae bag bal bao bas bat bba bbb bbc bbe bbg bbl bbo bbs bbt bca bcb bcc bce bcg bcl bco bcs bct be- bea beb bec bee beg bel beo bes bet bga bgb bgc bge bgg bgl bgo bgs bgt bla blb blc ble blg bll blo bls blt boa bob boc boe bog bol boo bos bot bsa bsb bsc bse bsg bsl bso bss bst bta btb btc bte btg btl bto bts btt c-- caa cab cac cae cag cal cao cas cat cba cbb cbc cbe cbg cbl cbo cbs cbt cca ccb ccc cce ccg ccl cco ccs cct ce- cea ceb cec cee ceg cel ceo ces cet cga cgb cgc cge cgg cgl cgo cgs cgt cl- cla clb clc cle clg cll clo cls clt co- coa cob coc coe cog col coo cos cot csa csb csc cse csg csl cso css cst cta ctb ctc cte ctg ctl cto cts ctt eaa eab eac eae eag eal eao eas eat eba ebb ebc ebe ebg ebl ebo ebs ebt ec- eca ecb ecc ece ecg ecl eco ecs ect eea eeb eec eee eeg eel eeo ees eet ega egb egc ege egg egl ego egs egt ela elb elc ele elg ell elo els elt eo- eoa eob eoc eoe eog eol eoo eos eot es- esa esb esc ese esg esl eso ess est eta etb etc ete etg etl eto ets ett gaa gab gac gae gag gal gao gas gat gba gbc gbe gbg gbl gbo gbs gbt gca gcb gcc gce gcg gcl gco gcs gct ge- gea geb gec gee geg gel geo ges get gga ggb ggc ggg ggo ggs ggt gla glb glc gle glg gll glo gls glt goa gob goc goe gog gol goo gos got gsa gsb gsc gse gsg gsl gso gss gst gta gtb gtc gte gtg gtl gto gts gtt la- laa lab lac lae lag lal lao las lat lba lbb lbc lbe lbg lbl lbo lbs lbt lca lcb lcc lce lcg lcl lco lcs lct lea leb lec lee leg lel leo les let lga lgb lgc lge lgg lgl lgo lgs lgt lla llb llc lle llg lll llo lls llt loa lob loc loe log lol loo los lot lsa lsb lsc lse lsg lsl lso lss lst lta ltb ltc lte ltg ltl lto lts ltt oaa oab oac oae oag oal oao oas oat ob- oba obb obc obe obg obl obo obs obt oc- oca ocb occ ocg ocl oco ocs oct oea oeb oec oee oeg oel oeo oes oet oga ogc oge ogg ogl ogo ogs ogt ola olb olc ole olg oll olo ols olt oo- ooa oob ooc oog ool ooo oos oot os- osa osb osc ose osg osl oso oss ost ot- ota otb otc ote otg otl oto ots ott saa sab sac sae sag sal sao sas sat sba sbb sbc sbe sbg sbl sbo sbs sbt sca scb scc sce scg scl sco scs sct se- sea seb sec see seg sel seo ses set sga sgb sgc sge sgg sgl sgo sgs sgt sla slb slc sle slg sll slo sls slt soa sob soc soe sog sol soo sos sot ss- ssa ssb ssc sse ssg ssl sso sss sst sta stb stc ste stg stl sto sts stt taa tab tac tae tag tal tao tas tat tba tbb tbc tbe tbg tbl tbo tbs tbt tca tcb tcc tce tcg tcl tco tcs tct te- tea teb tec tee teg tel teo tes tet tga tgb tgc tge tgg tgl tgo tgs tgt tla tlc tle tlg tll tlo tls tlt to- toa tob toc toe tog tol too tos tot tsa tsb tsc tse tsg tsl tso tss tst tta ttb ttc tte ttg ttl tto tts ttt