-er a-a a-b a-c aaa aab aac aae aah aam aar aas ab- aba abb abc abe abh abm abr abs ac- aca acb acc ace ach acm acr acs aea aeb aec aee aeh aem aer aes aha ahb ahc ahe ahh ahm ahr ahs ama amb amc ame amh amm amr ams ar- ara arb arc are arh arm arr ars as- asa asb asc ase ash asm asr ass baa bab bac bae bah bam bar bas bba bbb bbc bbe bbh bbm bbr bbs bca bcb bcc bce bch bcm bcr bcs be- bea beb bec bee beh bem ber bes bha bhb bhc bhe bhh bhm bhr bhs bma bmb bmc bme bmh bmm bmr bms bra brb bre brh brm brr brs bsa bsb bsc bse bsh bsm bsr bss c-- caa cab cac cae cah cam car cas cba cbb cbc cbe cbh cbm cbr cbs cca ccb ccc cce cch ccm ccr ccs ce- cea ceb cec cee ceh cem cer ces ch- cha chb chc che chh chm chr chs cma cmb cmc cme cmh cmm cmr cms cra crb crc cre crh crm crr crs csa csb csc cse csh csm csr css eaa eab eac eae eah eam ear eas eba ebb ebc ebe ebh ebm ebr ebs ec- eca ecb ecc ece ech ecm ecr ecs eea eeb eec eee eem eer ees eha ehb ehc ehe ehh ehm ehr ehs em- ema emb emc eme emh emm emr ems era erb erc ere erh erm err ers es- esa esb esc ese esh esm esr ess haa hab hac hae hah ham har has hba hbb hbc hbe hbh hbm hbr hbs hca hcb hcc hce hch hcm hcr hcs he- hea heb hec hee heh hem her hes hha hhb hhc hhe hhh hhm hhr hhs hma hmb hmc hme hmh hmm hmr hms hr- hra hrb hrc hre hrh hrm hrr hrs hsa hsb hsc hse hsh hsm hsr hss m-r maa mab mac mae mah mam mar mas mba mbb mbc mbe mbh mbm mbr mbs mc- mca mcb mcc mce mch mcm mcr mcs mea meb mec mee meh mem mer mes mha mhc mhh mhm mhr mhs mma mmb mmc mme mmh mmm mmr mms mra mrb mrc mre mrh mrm mrr mrs msa msb msc mse msh msm msr mss ra- raa rab rac rae rah ram rar ras rba rbb rbc rbe rbh rbm rbr rbs rca rcb rcc rce rch rcm rcr rcs re- rea reb rec ree reh rem rer res rh- rha rhb rhc rhe rhh rhm rhr rhs rma rmb rmc rme rmh rmm rmr rms rra rrb rrc rrh rrm rrr rrs rsa rsb rsc rse rsh rsm rsr rss saa sab sac sae sah sam sar sas sba sbb sbc sbe sbh sbm sbr sbs sca scb scc sce sch scm scr scs se- sea seb sec see seh sem ser ses sh- sha shb shc she shh shm shr shs sma smb smc sme smh smm smr sms sr- sra srb src sre srh srm srr srs ss- ssa ssb ssc sse ssh ssm ssr sss