a-a a-b a-c aaa aab aac aah aam aar aas ab- aba abb abc abh abm abr abs ac- aca acb acc ach acm acr acs aha ahb ahc ahh ahm ahr ahs ama amb amc amh amm amr ams ar- ara arb arc arh arm arr ars as- asa asb asc ash asm asr ass baa bab bac bah bam bar bas bba bbb bbc bbh bbm bbr bbs bca bcb bcc bch bcm bcr bcs bha bhb bhc bhh bhm bhr bhs bma bmb bmc bmh bmm bmr bms bra brb brh brm brr brs bsa bsb bsc bsh bsm bsr bss c-- caa cab cac cah cam car cas cba cbb cbc cbh cbm cbr cbs cca ccb ccc cch ccm ccr ccs ch- cha chb chc chh chm chr chs cma cmb cmc cmh cmm cmr cms cra crb crc crh crm crr crs csa csb csc csh csm csr css haa hab hac hah ham har has hba hbb hbc hbh hbm hbr hbs hca hcb hcc hch hcm hcr hcs hha hhb hhc hhh hhm hhr hhs hma hmb hmc hmh hmm hmr hms hr- hra hrb hrc hrh hrm hrr hrs hsa hsb hsc hsh hsm hsr hss m-r maa mab mac mah mam mar mas mba mbb mbc mbh mbm mbr mbs mc- mca mcb mcc mch mcm mcr mcs mha mhc mhh mhm mhr mhs mma mmb mmc mmh mmm mmr mms mra mrb mrc mrh mrm mrr mrs msa msb msc msh msm msr mss ra- raa rab rac rah ram rar ras rba rbb rbc rbh rbm rbr rbs rca rcb rcc rch rcm rcr rcs rh- rha rhb rhc rhh rhm rhr rhs rma rmb rmc rmh rmm rmr rms rra rrb rrc rrh rrm rrr rrs rsa rsb rsc rsh rsm rsr rss saa sab sac sah sam sar sas sba sbb sbc sbh sbm sbr sbs sca scb scc sch scm scr scs sh- sha shb shc shh shm shr shs sma smb smc smh smm smr sms sr- sra srb src srh srm srr srs ss- ssa ssb ssc ssh ssm ssr sss