a-a a-b aaa aab aad aag aah aan aao aar ab- aba abb abd abg abh abn abo abr ad- ada adb add adg adh adn ado adr ag- aga agb agd agg agh agn ago agr aha ahb ahd ahg ahh ahn aho ahr an- ana anb and ang anh ann ano anr aoa aob aod aog aoh aon aoo aor ar- ara arb ard arg arh arn aro arr baa bab bad bag bah ban bao bar bba bbb bbd bbg bbh bbn bbo bbr bda bdb bdd bdg bdh bdo bdr bga bgb bgd bgg bgh bgn bgo bgr bha bhb bhd bhg bhh bho bhr bna bnb bnd bng bnn bno bnr boa bob bod bog boh bon boo bor bra brb brd brg brh brn bro brr daa dab dad dag dah dan dao dar dba dbb dbd dbg dbh dbn dbo dbr dda ddb ddd ddg ddh ddn ddo ddr dga dgd dgg dgh dgn dgr dh- dha dhb dhd dhh dho dhr dna dnb dnd dng dnh dnn dno dnr doa dob dod dog doh don doo dor dra drb drd drg drn dro drr g-d gaa gab gad gag gah gan gao gar gba gbd gbg gbh gbn gbo gbr gda gdb gdd gdh gdn gdo gdr gga ggb ggd ggg ggh ggn ggo ggr gha ghb ghd ghg ghh ghn gho ghr gna gnb gnd gnn gno gnr goa gob god gog goh gon goo gor gra grb grd grg grh grn gro grr haa hab had hag hah han hao har hba hbb hbd hbg hbh hbn hbo hbr hda hdb hdd hdg hdh hdn hdo hdr hga hgb hgg hgh hgn hgo hgr hha hhb hhd hhg hhh hhn hho hhr hna hnb hnd hng hnh hnn hno hoa hob hod hog hoh hon hoo hor hr- hra hrb hrd hrg hrh hrn hro hrr naa nab nad nag nah nan nao nar nba nbb nbd nbg nbn nbo nbr nda ndb ndd ndg ndh ndn ndo ndr nga ngb ngd ngg ngh ngn ngo nha nhb nhd nhg nhh nhn nhr nna nnb nng nnh nnn nno no- noa nob nod nog noh non noo nor nra nrb nrd nrg nrn nro nrr oaa oab oad oag oah oan oao oar ob- oba obb obd obg obh obn obo obr oda odb odd odg odh odn odo odr oga ogd ogg ogh ogn ogo oha ohd ohg ohh ohn oho ohr on- ona onb ond ong onh onn ono onr oo- ooa oob ood oog ooh oon ooo oor or- ora orb ord org orh orn oro orr ra- raa rab rad rag rah ran rao rar rba rbb rbd rbg rbh rbn rbo rbr rda rdb rdd rdg rdh rdn rdo rdr rga rgb rgd rgg rgh rgn rgo rgr rh- rha rhb rhd rhg rhh rhn rho rhr rna rnb rnd rng rnh rnn rno rnr roa rob rod rog roh ron roo ror rra rrb rrd rrg rrh rrn rrr