-al a-a a-b a-i aaa aab aag aai aal aas ab- aba abb abg abi abl abs ag- aga agb agg agi agl ags ai- aia aib aig aii ail ais al- ala alb alg ali all als as- asa asb asg asi asl ass baa bab bag bai bal bas bba bbb bbg bbi bbl bbs bga bgb bgg bgi bgl bgs bi- bia bib big bii bil bis bla blb blg bli bll bls bsa bsb bsg bsi bsl bss gaa gab gag gai gal gas gba gbg gbi gbl gbs gga ggb ggg ggi ggs gia gib gig gii gil gis gla glb glg gli gll gls gsa gsb gsg gsi gsl gss ia- iaa iab iag iai ial ias iba ibb ibg ibi ibl ibs iga igb igg igi igl igs iia iib iii iil iis il- ila ilb ilg ili ill ils is- isa isb isg isi isl iss la- laa lab lag lai lal las lba lbb lbg lbi lbl lbs lga lgb lgg lgi lgl lgs lia lib lig lii lil lis lla llb llg lli lll lls lsa lsb lsg lsi lsl lss saa sab sag sai sal sas sba sbb sbg sbi sbl sbs sga sgb sgg sgi sgl sgs sia sib sig sii sil sis sla slb slg sli sll sls ss- ssa ssb ssg ssi ssl sss