-al a-a a-b a-i aaa aab aag aai aal aar ab- aba abb abg abi abl abr ag- aga agb agg agi agl agr ai- aia aib aig aii ail air al- ala alb alg ali all alr ar- ara arb arg ari arl arr baa bab bag bai bal bar bba bbb bbg bbi bbl bbr bga bgb bgg bgi bgl bgr bi- bia bib big bii bil bir bla blb blg bli bll blr bra brb brg bri brl brr gaa gab gag gai gal gar gba gbg gbi gbl gbr gga ggb ggg ggi ggr gia gib gig gii gil gir gla glb glg gli gll glr gra grb grg gri grl grr ia- iaa iab iag iai ial iar iba ibb ibg ibi ibl ibr iga igb igg igi igl igr iia iib iii iil iir il- ila ilb ilg ili ill ilr ir- ira irb irg iri irl irr la- laa lab lag lai lal lar lba lbb lbg lbi lbl lbr lga lgb lgg lgi lgl lgr lia lib lig lii lil lir lla llb llg lli lll llr lra lrb lrg lri lrr ra- raa rab rag rai ral rar rba rbb rbg rbi rbl rbr rga rgb rgg rgi rgr ria rib rig rii ril rir rla rlg rli rll rlr rra rrb rrg rri rrl rrr