-al -ol a-a a-b a-t aaa aab aag aal aan aao aar aat ab- aba abb abg abl abn abo abr abt ag- aga agb agg agl agn ago agr agt al- ala alb alg all aln alo alr alt an- ana anb ang anl ann ano anr ant aoa aob aog aol aon aoo aor aot ar- ara arb arg arl arn aro arr art at- ata atb atg atl atn ato atr att baa bab bag bal ban bao bar bat bba bbb bbg bbl bbn bbo bbr bbt bga bgb bgg bgl bgn bgo bgr bgt bla blb blg bll bln blo blr blt bna bnb bng bnl bnn bno bnr bnt boa bob bog bol bon boo bor bot bra brb brg brl brn bro brr brt bta btb btg btl btn bto btr btt gaa gab gag gal gan gao gar gat gba gbg gbl gbn gbo gbr gbt gga ggb ggg ggn ggo ggr ggt gla glb glg gll gln glo glr glt gna gnb gnl gnn gno gnr gnt goa gob gog gol gon goo gor got gra grb grg grl grn gro grr grt gta gtb gtg gtl gtn gto gtr gtt la- laa lab lag lal lan lao lar lat lba lbb lbg lbl lbo lbr lbt lga lgb lgg lgl lgn lgo lgr lgt lla llb llg lll lln llo llr llt lna lnb lng lnl lnn lno lnr lnt loa lob log lol lon loo lor lot lra lrb lrg lrn lro lrr lrt lta ltb ltg ltl lto ltr ltt naa nab nag nal nan nao nar nat nba nbb nbg nbl nbn nbo nbr nbt nga ngb ngg ngl ngn ngo ngt nla nlb nlg nll nln nlo nlr nlt nna nnb nng nnl nnn nno nnt no- noa nob nog nol non noo nor not nra nrb nrg nrl nrn nro nrr nrt nta ntb ntg ntn nto ntr ntt oaa oab oag oal oan oao oar oat ob- oba obb obg obl obn obo obr obt oga ogg ogl ogn ogo ogt ola olb olg oll oln olo olt on- ona onb ong onl onn ono onr ont oo- ooa oob oog ool oon ooo oor oot or- ora orb org orl orn oro orr ort ot- ota otb otg otl otn oto otr ott ra- raa rab rag ral ran rao rar rat rba rbb rbg rbl rbn rbo rbr rbt rga rgb rgg rgn rgo rgr rgt rla rlg rll rln rlo rlr rlt rna rnb rng rnn rno rnr rnt roa rob rog rol ron roo ror rot rra rrb rrg rrl rrn rrr rrt rta rtb rtg rtl rtn rto rtr rtt taa tab tag tal tan tao tar tat tba tbb tbg tbl tbn tbo tbr tbt tga tgb tgg tgl tgn tgo tgr tgt tla tlg tll tln tlo tlr tlt tna tnb tng tnl tnn tno tnr tnt to- toa tob tog tol ton too tor tot tra trb trg trl trn tro trr trt tta ttb ttg ttl ttn tto ttr ttt