-er a-a a-b aaa aab aad aae aah aak aam aao aar ab- aba abb abd abe abh abk abm abo abr ad- ada adb add ade adh adk adm ado adr aea aeb aed aee aeh aek aem aeo aer aha ahb ahd ahe ahh ahk ahm aho ahr aka akb akd ake akh akk akm ako akr ama amb amd ame amh amk amm amo amr aoa aob aod aoe aoh aok aom aoo aor ar- ara arb ard are arh ark arm aro arr baa bab bad bae bah bak bam bao bar bba bbb bbd bbe bbh bbk bbm bbo bbr bda bdb bdd bde bdh bdk bdm bdo bdr be- bea beb bed bee beh bek bem beo ber bha bhb bhd bhe bhh bhk bhm bho bhr bka bkb bke bkk bkm bko bkr bma bmb bmd bme bmh bmk bmm bmo bmr boa bob bod boe boh bok bom boo bor bra brb brd bre brh brk brm bro brr daa dab dad dae dah dak dam dao dar dba dbb dbd dbe dbh dbk dbm dbo dbr dda ddb ddd dde ddh ddk ddm ddo ddr de- dea deb ded dee deh dek dem deo der dh- dha dhb dhd dhe dhh dhk dhm dho dhr dka dkb dke dkk dkm dko dkr dma dmb dmd dme dmh dmk dmm dmo dmr doa dob dod doe doh dok dom doo dor dra drb drd dre drk drm dro drr eaa eab ead eae eah eak eam eao ear eba ebb ebd ebe ebh ebk ebm ebo ebr ed- eda edb edd ede edh edk edm edo edr eea eeb eed eee eek eem eeo eer eha ehb ehd ehe ehh ehm eho ehr eka ekb ekd eke ekh eko ekr em- ema emb emd eme emh emk emm emo emr eo- eoa eob eod eoe eoh eok eom eoo eor era erb erd ere erh erk erm ero err haa hab had hae hah hak ham hao har hba hbb hbd hbe hbh hbk hbm hbo hbr hda hdb hdd hde hdh hdk hdm hdo hdr he- hea heb hed hee heh hek hem heo her hha hhb hhd hhe hhh hhk hhm hho hhr hka hkb hkd hkh hkk hkm hko hkr hma hmb hmd hme hmh hmk hmm hmo hmr hoa hob hod hoe hoh hok hom hoo hor hr- hra hrb hrd hre hrh hrk hrm hro hrr ka- kaa kab kad kae kah kak kam kao kar kba kbb kbd kbe kbh kbk kbm kbo kbr kda kdb kde kdh kdk kdm kdo kdr ke- kea keb ked kee keh kek kem keo ker kha khe khh khk khm kho khr kkb kke kkh kkk kkm kkr kma kmb kmd kme kmh kmk kmm kmo koa kob kod koe koh kok kom koo kor kra krd krk kro krr m-o m-r maa mab mad mae mah mak mam mao mar mba mbb mbd mbe mbh mbk mbm mbo mbr mda mdb mdd mde mdh mdk mdm mdo mdr mea meb med mee meh mek mem meo mer mha mhd mhh mhk mhm mho mhr mka mkb mkd mke mkh mkk mkm mko mkr mma mmb mmd mme mmh mmk mmm mmo mmr moa mob mod moe moh mok mom moo mor mra mrb mrd mre mrh mrk mrm mro mrr oaa oab oad oae oah oak oam oao oar ob- oba obb obd obe obh obk obm obo obr oda odb odd ode odh odm odo odr oea oeb oed oee oeh oem oeo oer oha ohd ohe ohh ohm oho ohr oka okb okd oke okk oko okr om- oma omb omd ome omh omm omo omr oo- ooa oob ood ooh ook oom ooo oor or- ora orb ord ore orh ork orm oro orr ra- raa rab rad rae rah rak ram rao rar rba rbb rbd rbe rbh rbk rbm rbo rbr rda rdb rdd rde rdh rdm rdo rdr re- rea reb red ree reh rek rem reo rer rh- rha rhb rhd rhe rhh rhm rho rhr rkb rke rkk rkm rko rma rmb rmd rme rmh rmm rmo rmr roa rob rod roe roh rok rom roo ror rra rrb rrd rrh rrk rrm rrr