a-a a-b a-c aaa aab aac aah aam aap ab- aba abb abc abh abm abp ac- aca acb acc ach acm acp aha ahb ahc ahh ahm ahp ama amb amc amh amm amp ap- apa apb apc aph apm app b-p baa bab bac bah bam bap bba bbb bbc bbh bbm bbp bca bcb bcc bch bcm bcp bha bhb bhc bhh bhm bhp bma bmb bmc bmh bmm bmp bpa bpb bpc bph bpm bpp c-- caa cab cac cah cam cap cba cbb cbc cbh cbm cbp cca ccb ccc cch ccm ccp ch- cha chb chc chh chm chp cma cmb cmc cmh cmm cmp cpa cpb cpc cph cpm cpp haa hab hac hah ham hap hba hbb hbc hbh hbm hbp hca hcb hcc hch hcm hcp hha hhb hhc hhh hhm hhp hma hmb hmc hmh hmm hmp hpa hpb hpc hph hpm hpp maa mab mac mah mam map mba mbb mbc mbh mbm mbp mc- mca mcb mcc mch mcm mcp mha mhc mhh mhm mhp mma mmb mmc mmh mmm mmp mpa mpb mpc mph mpm mpp p-p paa pab pac pah pam pap pba pbb pbc pbm pbp pca pcb pcc pch pcm pcp pha phb phc phm php pma pmb pmc pmh pmm pmp ppa ppb ppc pph ppm ppp