-er a-a a-b a-c aaa aab aac aae aag aah aam aar aau ab- aba abb abc abe abg abh abm abr abu ac- aca acb acc ace acg ach acm acr acu aea aeb aec aee aeg aeh aem aer aeu ag- aga agb agc age agg agh agm agr agu aha ahb ahc ahe ahg ahh ahm ahr ahu ama amb amc ame amg amh amm amr amu ar- ara arb arc are arg arh arm arr aru au- aua aub auc aue aug auh aum aur b-u baa bab bac bae bag bah bam bar bau bba bbb bbc bbe bbg bbh bbm bbr bbu bca bcb bcc bce bcg bch bcm bcr bcu be- bea beb bec bee beg beh bem ber beu bga bgb bgc bge bgg bgh bgm bgr bgu bha bhb bhc bhe bhg bhh bhm bhr bhu bma bmb bmc bme bmg bmh bmm bmr bmu bra brb bre brg brh brm brr bru bua bub buc bue bug buh bum bur buu c-- caa cab cac cae cag cah cam car cau cba cbb cbc cbe cbg cbh cbm cbr cbu cca ccb ccc cce ccg cch ccm ccr ccu ce- cea ceb cec cee ceg ceh cem cer ceu cga cgb cgc cge cgg cgh cgm cgr cgu ch- cha chb chc che chg chh chm chr chu cma cmb cmc cme cmg cmh cmm cmr cmu cra crb crc cre crg crh crm crr cru cua cub cuc cue cug cuh cum cur cuu eaa eab eac eae eag eah eam ear eau eba ebb ebc ebe ebg ebh ebm ebr ebu ec- eca ecb ecc ece ecg ech ecm ecr ecu eea eeb eec eee eeg eem eer ega egb egc ege egg egh egm egr egu eha ehb ehc ehe ehg ehh ehm ehr ehu em- ema emb emc eme emg emh emm emr emu era erb erc ere erg erh erm err eru eu- eua eub euc eue eug eur gaa gab gac gae gag gah gam gar gau gba gbc gbe gbg gbh gbm gbr gbu gca gcb gcc gce gcg gch gcm gcr gcu ge- gea geb gec gee geg geh gem ger geu gga ggb ggc ggg ggh ggm ggr ggu gha ghb ghc ghe ghg ghh ghr gma gmb gmc gme gmg gmh gmm gmr gra grb grc gre grg grh grm grr gru gu- gua gub guc gue gug gum gur guu haa hab hac hae hag hah ham har hau hba hbb hbc hbe hbg hbh hbm hbr hbu hca hcb hcc hce hcg hch hcm hcr he- hea heb hec hee heg heh hem her heu hga hgb hgc hge hgg hgh hgm hgr hgu hha hhb hhc hhe hhg hhh hhm hhr hhu hma hmb hmc hme hmg hmh hmm hmr hmu hr- hra hrb hrc hre hrg hrh hrm hrr hru hua hub huc hue hug huh hum hur huu m-r maa mab mac mae mag mah mam mar mau mba mbb mbc mbe mbg mbh mbm mbr mbu mc- mca mcb mcc mce mcg mch mcm mcr mcu mea meb mec mee meg meh mem mer meu mga mgb mgc mge mgh mgm mgr mgu mha mhc mhg mhh mhm mhr mhu mma mmb mmc mme mmg mmh mmm mmr mmu mra mrb mrc mre mrg mrh mrm mrr mru mua mub muc mue mug muh mum mur muu ra- raa rab rac rae rag rah ram rar rau rba rbb rbc rbe rbg rbh rbm rbr rbu rca rcb rcc rce rcg rch rcm rcr rcu re- rea reb rec ree reg reh rem rer reu rga rgb rgc rge rgg rgh rgr rh- rha rhb rhc rhe rhg rhh rhm rhr rhu rma rmb rmc rme rmg rmh rmm rmr rra rrb rrc rrg rrh rrm rrr rru rua rub ruc rue rug ruh rum rur ruu ua- uaa uab uac uae uag uah uam uar uau uba ubb ubc ube ubg ubh ubr ubu uca ucb ucc uce ucg uch ucm ucr ucu uea ueb uec uee ueg ueh uem uer uga ugb ugc uge ugg ugh ugm ugr ugu uha uhb uhc uhe uhh uhm uhr uhu um- uma umb umc ume umg umh umm umr umu ur- ura urb urc ure urg urm urr uru uua uuc uue uug uum uur uuu