a-a a-b aaa aab aad aah aam aao aar ab- aba abb abd abh abm abo abr ad- ada adb add adh adm ado adr aha ahb ahd ahh ahm aho ahr ama amb amd amh amm amo amr aoa aob aod aoh aom aoo aor ar- ara arb ard arh arm aro arr baa bab bad bah bam bao bar bba bbb bbd bbh bbm bbo bbr bda bdb bdd bdh bdm bdo bdr bha bhb bhd bhh bhm bho bhr bma bmb bmd bmh bmm bmo bmr boa bob bod boh bom boo bor bra brb brd brh brm bro brr daa dab dad dah dam dao dar dba dbb dbd dbh dbm dbo dbr dda ddb ddd ddh ddm ddo ddr dh- dha dhb dhd dhh dhm dho dhr dma dmb dmd dmh dmm dmo dmr doa dob dod doh dom doo dor dra drb drd drm dro drr haa hab had hah ham hao har hba hbb hbd hbh hbm hbo hbr hda hdb hdd hdh hdm hdo hdr hha hhb hhd hhh hhm hho hhr hma hmb hmd hmh hmm hmo hmr hoa hob hod hoh hom hoo hor hr- hra hrb hrd hrh hrm hro hrr m-o m-r maa mab mad mah mam mao mar mba mbb mbd mbh mbm mbo mbr mda mdb mdd mdh mdm mdo mdr mha mhd mhh mhm mho mhr mma mmb mmd mmh mmm mmo mmr moa mob mod moh mom moo mor mra mrb mrd mrh mrm mro mrr oaa oab oad oah oam oao oar ob- oba obb obd obh obm obo obr oda odb odd odh odm odo odr oha ohd ohh ohm oho ohr om- oma omb omd omh omm omo omr oo- ooa oob ood ooh oom ooo oor or- ora orb ord orh orm oro orr ra- raa rab rad rah ram rao rar rba rbb rbd rbh rbm rbo rbr rda rdb rdd rdh rdm rdo rdr rh- rha rhb rhd rhh rhm rho rhr rma rmb rmd rmh rmm rmo rmr roa rob rod roh rom roo ror rra rrb rrd rrh rrm rrr