-al -ol a-a a-b aaa aab aag aah aal aan aao ab- aba abb abg abh abl abn abo ag- aga agb agg agh agl agn ago aha ahb ahg ahh ahl ahn aho al- ala alb alg alh all aln alo an- ana anb ang anh anl ann ano aoa aob aog aoh aol aon aoo baa bab bag bah bal ban bao bba bbb bbg bbh bbl bbn bbo bga bgb bgg bgh bgl bgn bgo bha bhb bhg bhh bhl bho bla blb blg blh bll bln blo bna bnb bng bnl bnn bno boa bob bog boh bol bon boo gaa gab gag gah gal gan gao gba gbg gbh gbl gbn gbo gga ggb ggg ggh ggn ggo gha ghb ghg ghh ghl ghn gho gla glb glg glh gll gln glo gna gnb gnl gnn gno goa gob gog goh gol gon goo haa hab hag hah hal han hao hba hbb hbg hbh hbl hbn hbo hga hgb hgg hgh hgl hgn hgo hha hhb hhg hhh hhl hhn hho hla hlb hlg hlh hll hln hlo hna hnb hng hnh hnl hnn hno hoa hob hog hoh hol hon hoo la- laa lab lag lah lal lan lao lba lbb lbg lbh lbl lbo lga lgb lgg lgh lgl lgn lgo lha lhb lhh lho lla llb llg lll lln llo lna lnb lng lnh lnl lnn lno loa lob log loh lol lon loo naa nab nag nah nal nan nao nba nbb nbg nbl nbn nbo nga ngb ngg ngh ngl ngn ngo nha nhb nhg nhh nhl nhn nla nlb nlg nlh nll nln nlo nna nnb nng nnh nnl nnn nno no- noa nob nog noh nol non noo oaa oab oag oah oal oan oao ob- oba obb obg obh obl obn obo oga ogg ogh ogl ogn ogo oha ohg ohh ohl ohn oho ola olb olg oll oln olo on- ona onb ong onh onl onn ono oo- ooa oob oog ooh ool oon ooo