a-a a-b a-c aaa aab aac aag aah aam aar ab- aba abb abc abg abh abm abr ac- aca acb acc acg ach acm acr ag- aga agb agc agg agh agm agr aha ahb ahc ahg ahh ahm ahr ama amb amc amg amh amm amr ar- ara arb arc arg arh arm arr baa bab bac bag bah bam bar bba bbb bbc bbg bbh bbm bbr bca bcb bcc bcg bch bcm bcr bga bgb bgc bgg bgh bgm bgr bha bhb bhc bhg bhh bhm bhr bma bmb bmc bmg bmh bmm bmr bra brb brg brh brm brr c-- caa cab cac cag cah cam car cba cbb cbc cbg cbh cbm cbr cca ccb ccc ccg cch ccm ccr cga cgb cgc cgg cgh cgm cgr ch- cha chb chc chg chh chm chr cma cmb cmc cmg cmh cmm cmr cra crb crc crg crh crm crr gaa gab gac gag gah gam gar gba gbc gbg gbh gbm gbr gca gcb gcc gcg gch gcm gcr gga ggb ggc ggg ggh ggm ggr gha ghb ghc ghg ghh ghr gma gmb gmc gmg gmh gmm gmr gra grb grc grg grh grm grr haa hab hac hag hah ham har hba hbb hbc hbg hbh hbm hbr hca hcb hcc hcg hch hcm hcr hga hgb hgc hgg hgh hgm hgr hha hhb hhc hhg hhh hhm hhr hma hmb hmc hmg hmh hmm hmr hr- hra hrb hrc hrg hrh hrm hrr m-r maa mab mac mag mah mam mar mba mbb mbc mbg mbh mbm mbr mc- mca mcb mcc mcg mch mcm mcr mga mgb mgc mgh mgm mgr mha mhc mhg mhh mhm mhr mma mmb mmc mmg mmh mmm mmr mra mrb mrc mrg mrh mrm mrr ra- raa rab rac rag rah ram rar rba rbb rbc rbg rbh rbm rbr rca rcb rcc rcg rch rcm rcr rga rgb rgc rgg rgh rgr rh- rha rhb rhc rhg rhh rhm rhr rma rmb rmc rmg rmh rmm rmr rra rrb rrc rrg rrh rrm rrr