-al -ol a-a a-b aaa aab aag aal aan aao aar ab- aba abb abg abl abn abo abr ag- aga agb agg agl agn ago agr al- ala alb alg all aln alo alr an- ana anb ang anl ann ano anr aoa aob aog aol aon aoo aor ar- ara arb arg arl arn aro arr baa bab bag bal ban bao bar bba bbb bbg bbl bbn bbo bbr bga bgb bgg bgl bgn bgo bgr bla blb blg bll bln blo blr bna bnb bng bnl bnn bno bnr boa bob bog bol bon boo bor bra brb brg brl brn bro brr gaa gab gag gal gan gao gar gba gbg gbl gbn gbo gbr gga ggb ggg ggn ggo ggr gla glb glg gll gln glo glr gna gnb gnl gnn gno gnr goa gob gog gol gon goo gor gra grb grg grl grn gro grr la- laa lab lag lal lan lao lar lba lbb lbg lbl lbo lbr lga lgb lgg lgl lgn lgo lgr lla llb llg lll lln llo llr lna lnb lng lnl lnn lno lnr loa lob log lol lon loo lor lra lrb lrg lrn lro lrr naa nab nag nal nan nao nar nba nbb nbg nbl nbn nbo nbr nga ngb ngg ngl ngn ngo nla nlb nlg nll nln nlo nlr nna nnb nng nnl nnn nno no- noa nob nog nol non noo nor nra nrb nrg nrl nrn nro nrr oaa oab oag oal oan oao oar ob- oba obb obg obl obn obo obr oga ogg ogl ogn ogo ola olb olg oll oln olo on- ona onb ong onl onn ono onr oo- ooa oob oog ool oon ooo oor or- ora orb org orl orn oro orr ra- raa rab rag ral ran rao rar rba rbb rbg rbl rbn rbo rbr rga rgb rgg rgn rgo rgr rla rlg rll rln rlo rlr rna rnb rng rnn rno rnr roa rob rog rol ron roo ror rra rrb rrg rrl rrn rrr