-al a-a a-b a-c aaa aab aac aae aag aah aal aas ab- aba abb abc abe abg abh abl abs ac- aca acb acc ace acg ach acl acs aea aeb aec aee aeg aeh ael aes ag- aga agb agc age agg agh agl ags aha ahb ahc ahe ahg ahh ahl ahs al- ala alb alc ale alg alh all als as- asa asb asc ase asg ash asl ass baa bab bac bae bag bah bal bas bba bbb bbc bbe bbg bbh bbl bbs bca bcb bcc bce bcg bch bcl bcs be- bea beb bec bee beg beh bel bes bga bgb bgc bge bgg bgh bgl bgs bha bhb bhc bhe bhg bhh bhl bhs bla blb blc ble blg blh bll bls bsa bsb bsc bse bsg bsh bsl bss c-- caa cab cac cae cag cah cal cas cba cbb cbc cbe cbg cbh cbl cbs cca ccb ccc cce ccg cch ccl ccs ce- cea ceb cec cee ceg ceh cel ces cga cgb cgc cge cgg cgh cgl cgs ch- cha chb chc che chg chh chl chs cl- cla clb clc cle clg clh cll cls csa csb csc cse csg csh csl css eaa eab eac eae eag eah eal eas eba ebb ebc ebe ebg ebh ebl ebs ec- eca ecb ecc ece ecg ech ecl ecs eea eeb eec eee eeg eel ees ega egb egc ege egg egh egl egs eha ehb ehc ehe ehg ehh ehl ehs ela elb elc ele elg elh ell els es- esa esb esc ese esg esh esl ess gaa gab gac gae gag gah gal gas gba gbc gbe gbg gbh gbl gbs gca gcb gcc gce gcg gch gcl gcs ge- gea geb gec gee geg geh gel ges gga ggb ggc ggg ggh ggs gha ghb ghc ghe ghg ghh ghl ghs gla glb glc gle glg glh gll gls gsa gsb gsc gse gsg gsl gss haa hab hac hae hag hah hal has hba hbb hbc hbe hbg hbh hbl hbs hca hcb hcc hce hcg hch hcl hcs he- hea heb hec hee heg heh hel hes hga hgb hgc hge hgg hgh hgl hgs hha hhb hhc hhe hhg hhh hhl hhs hla hlb hlc hle hlg hlh hll hls hsa hsb hsc hse hsg hsh hsl hss la- laa lab lac lae lag lah lal las lba lbb lbc lbe lbg lbh lbl lbs lca lcb lcc lce lcg lch lcl lcs lea leb lec lee leg leh lel les lga lgb lgc lge lgg lgh lgl lgs lha lhb lhc lhh lhs lla llb llc lle llg lll lls lsa lsb lsc lse lsg lsh lsl lss saa sab sac sae sag sah sal sas sba sbb sbc sbe sbg sbh sbl sbs sca scb scc sce scg sch scl scs se- sea seb sec see seg seh sel ses sga sgb sgc sge sgg sgh sgl sgs sh- sha shb shc she shg shh shl shs sla slb slc sle slg slh sll sls ss- ssa ssb ssc sse ssg ssh ssl sss