-al -ol a-a a-b a-t aaa aab aag aal aan aao aat ab- aba abb abg abl abn abo abt ag- aga agb agg agl agn ago agt al- ala alb alg all aln alo alt an- ana anb ang anl ann ano ant aoa aob aog aol aon aoo aot at- ata atb atg atl atn ato att baa bab bag bal ban bao bat bba bbb bbg bbl bbn bbo bbt bga bgb bgg bgl bgn bgo bgt bla blb blg bll bln blo blt bna bnb bng bnl bnn bno bnt boa bob bog bol bon boo bot bta btb btg btl btn bto btt gaa gab gag gal gan gao gat gba gbg gbl gbn gbo gbt gga ggb ggg ggn ggo ggt gla glb glg gll gln glo glt gna gnb gnl gnn gno gnt goa gob gog gol gon goo got gta gtb gtg gtl gtn gto gtt la- laa lab lag lal lan lao lat lba lbb lbg lbl lbo lbt lga lgb lgg lgl lgn lgo lgt lla llb llg lll lln llo llt lna lnb lng lnl lnn lno lnt loa lob log lol lon loo lot lta ltb ltg ltl lto ltt naa nab nag nal nan nao nat nba nbb nbg nbl nbn nbo nbt nga ngb ngg ngl ngn ngo ngt nla nlb nlg nll nln nlo nlt nna nnb nng nnl nnn nno nnt no- noa nob nog nol non noo not nta ntb ntg ntn nto ntt oaa oab oag oal oan oao oat ob- oba obb obg obl obn obo obt oga ogg ogl ogn ogo ogt ola olb olg oll oln olo olt on- ona onb ong onl onn ono ont oo- ooa oob oog ool oon ooo oot ot- ota otb otg otl otn oto ott taa tab tag tal tan tao tat tba tbb tbg tbl tbn tbo tbt tga tgb tgg tgl tgn tgo tgt tla tlg tll tln tlo tlt tna tnb tng tnl tnn tno tnt to- toa tob tog tol ton too tot tta ttb ttg ttl ttn tto ttt