a-a a-b aaa aab aag aah aam aan aao aar ab- aba abb abg abh abm abn abo abr ag- aga agb agg agh agm agn ago agr aha ahb ahg ahh ahm ahn aho ahr ama amb amg amh amm amn amo amr an- ana anb ang anh anm ann ano anr aoa aob aog aoh aom aon aoo aor ar- ara arb arg arh arm arn aro arr baa bab bag bah bam ban bao bar bba bbb bbg bbh bbm bbn bbo bbr bga bgb bgg bgh bgm bgn bgo bgr bha bhb bhg bhh bhm bho bhr bma bmb bmg bmh bmm bmn bmo bmr bna bnb bng bnn bno bnr boa bob bog boh bom bon boo bor bra brb brg brh brm brn bro brr gaa gab gag gah gam gan gao gar gba gbg gbh gbm gbn gbo gbr gga ggb ggg ggh ggm ggn ggo ggr gha ghb ghg ghh ghn gho ghr gma gmb gmg gmh gmm gmn gmo gmr gna gnb gnm gnn gno gnr goa gob gog goh gom gon goo gor gra grb grg grh grm grn gro grr haa hab hag hah ham han hao har hba hbb hbg hbh hbm hbn hbo hbr hga hgb hgg hgh hgm hgn hgo hgr hha hhb hhg hhh hhm hhn hho hhr hma hmb hmg hmh hmm hmo hmr hna hnb hng hnh hnn hno hoa hob hog hoh hom hon hoo hor hr- hra hrb hrg hrh hrm hrn hro hrr m-o m-r maa mab mag mah mam man mao mar mba mbb mbg mbh mbm mbo mbr mga mgb mgh mgm mgn mgo mgr mha mhg mhh mhm mhn mho mhr mma mmb mmg mmh mmm mmn mmo mmr mna mnb mng mnm mnn mno mnr moa mob mog moh mom mon moo mor mra mrb mrg mrh mrm mrn mro mrr naa nab nag nah nam nan nao nar nba nbb nbg nbm nbn nbo nbr nga ngb ngg ngh ngm ngn ngo nha nhb nhg nhh nhm nhn nhr nma nmb nmg nmh nmm nmn nmo nmr nna nnb nng nnh nnm nnn nno no- noa nob nog noh nom non noo nor nra nrb nrg nrm nrn nro nrr oaa oab oag oah oam oan oao oar ob- oba obb obg obh obm obn obo obr oga ogg ogh ogn ogo oha ohg ohh ohm ohn oho ohr om- oma omb omg omh omm omn omo omr on- ona onb ong onh onn ono onr oo- ooa oob oog ooh oom oon ooo oor or- ora orb org orh orm orn oro orr ra- raa rab rag rah ram ran rao rar rba rbb rbg rbh rbm rbn rbo rbr rga rgb rgg rgh rgn rgo rgr rh- rha rhb rhg rhh rhm rhn rho rhr rma rmb rmg rmh rmm rmn rmo rmr rna rnb rng rnh rnm rnn rno rnr roa rob rog roh rom ron roo ror rra rrb rrg rrh rrm rrn rrr