-er a-a a-b a-c aaa aab aac aae aag aah aak aam aao aar ab- aba abb abc abe abg abh abk abm abo abr ac- aca acb acc ace acg ach ack acm aco acr aea aeb aec aee aeg aeh aek aem aeo aer ag- aga agb agc age agg agh agk agm ago agr aha ahb ahc ahe ahg ahh ahk ahm aho ahr aka akb akc ake akg akh akk akm ako akr ama amb amc ame amg amh amk amm amo amr aoa aob aoc aoe aog aoh aok aom aoo aor ar- ara arb arc are arg arh ark arm aro arr baa bab bac bae bag bah bak bam bao bar bba bbb bbc bbe bbg bbh bbk bbm bbo bbr bca bcb bcc bce bcg bch bck bcm bco bcr be- bea beb bec bee beg beh bek bem beo ber bga bgb bgc bge bgg bgh bgk bgm bgo bgr bha bhb bhc bhe bhg bhh bhk bhm bho bhr bka bkb bkc bke bkg bkk bkm bko bkr bma bmb bmc bme bmg bmh bmk bmm bmo bmr boa bob boc boe bog boh bok bom boo bor bra brb bre brg brh brk brm bro brr c-- caa cab cac cae cag cah cak cam cao car cba cbb cbc cbe cbg cbh cbk cbm cbo cbr cca ccb ccc cce ccg cch cck ccm cco ccr ce- cea ceb cec cee ceg ceh cek cem ceo cer cga cgb cgc cge cgg cgh cgm cgo cgr ch- cha chb chc che chg chh chk chm cho chr cka ckb ckc ckh ckm cko cma cmb cmc cme cmg cmh cmk cmm cmo cmr co- coa cob coc coe cog coh cok com coo cor cra crb crc cre crg crh crk crm cro crr eaa eab eac eae eag eah eak eam eao ear eba ebb ebc ebe ebg ebh ebk ebm ebo ebr ec- eca ecb ecc ece ecg ech eck ecm eco ecr eea eeb eec eee eeg eek eem eeo eer ega egb egc ege egg egh egm ego egr eha ehb ehc ehe ehg ehh ehm eho ehr eka ekb ekc eke ekg ekh eko ekr em- ema emb emc eme emg emh emk emm emo emr eo- eoa eob eoc eoe eog eoh eok eom eoo eor era erb erc ere erg erh erk erm ero err gaa gab gac gae gag gah gak gam gao gar gba gbc gbe gbg gbh gbk gbm gbo gbr gca gcb gcc gce gcg gch gck gcm gco gcr ge- gea geb gec gee geg geh gek gem geo ger gga ggb ggc ggg ggh ggm ggo ggr gha ghb ghc ghe ghg ghh gho ghr gka gkb gkh gkm gko gma gmb gmc gme gmg gmh gmm gmo gmr goa gob goc goe gog goh gok gom goo gor gra grb grc gre grg grh grk grm gro grr haa hab hac hae hag hah hak ham hao har hba hbb hbc hbe hbg hbh hbk hbm hbo hbr hca hcb hcc hce hcg hch hck hcm hco hcr he- hea heb hec hee heg heh hek hem heo her hga hgb hgc hge hgg hgh hgk hgm hgo hgr hha hhb hhc hhe hhg hhh hhk hhm hho hhr hka hkb hkg hkh hkk hkm hko hkr hma hmb hmc hme hmg hmh hmk hmm hmo hmr hoa hob hoc hoe hog hoh hok hom hoo hor hr- hra hrb hrc hre hrg hrh hrk hrm hro hrr ka- kaa kab kac kae kag kah kak kam kao kar kba kbb kbc kbe kbh kbk kbm kbo kbr kca kcb kcc kce kcg kch kck kcm kcr ke- kea keb kec kee keg keh kek kem keo ker kga kgb kgc kgh kgm kgo kha khe khh khk khm kho khr kkb kkc kke kkh kkk kkm kkr kma kmb kmc kme kmg kmh kmk kmm kmo koa kob koc koe kog koh kok kom koo kor kra krc krg krk kro krr m-o m-r maa mab mac mae mag mah mak mam mao mar mba mbb mbc mbe mbg mbh mbk mbm mbo mbr mc- mca mcb mcc mce mcg mch mck mcm mco mcr mea meb mec mee meg meh mek mem meo mer mga mgb mgc mge mgh mgk mgm mgo mgr mha mhc mhg mhh mhk mhm mho mhr mka mkb mkc mke mkg mkh mkk mkm mko mkr mma mmb mmc mme mmg mmh mmk mmm mmo mmr moa mob moc moe mog moh mok mom moo mor mra mrb mrc mre mrg mrh mrk mrm mro mrr oaa oab oac oae oag oah oak oam oao oar ob- oba obb obc obe obg obh obk obm obo obr oc- oca ocb occ ocg och ock ocm oco ocr oea oeb oec oee oeg oeh oem oeo oer oga ogc oge ogg ogh ogo oha ohc ohe ohg ohh ohm oho ohr oka okb okc oke okg okk oko okr om- oma omb omc ome omg omh omm omo omr oo- ooa oob ooc oog ooh ook oom ooo oor or- ora orb orc ore org orh ork orm oro orr ra- raa rab rac rae rag rah rak ram rao rar rba rbb rbc rbe rbg rbh rbk rbm rbo rbr rca rcb rcc rce rcg rch rcm rco rcr re- rea reb rec ree reg reh rek rem reo rer rga rgb rgc rge rgg rgh rgk rgo rgr rh- rha rhb rhc rhe rhg rhh rhm rho rhr rkb rkc rke rkg rkk rkm rko rma rmb rmc rme rmg rmh rmm rmo rmr roa rob roc roe rog roh rok rom roo ror rra rrb rrc rrg rrh rrk rrm rrr