a-a a-b aaa aab aah aan aap ab- aba abb abh abn abp aha ahb ahh ahn ahp an- ana anb anh ann anp ap- apa apb aph apn app b-p baa bab bah ban bap bba bbb bbh bbn bbp bha bhb bhh bhp bna bnb bnn bnp bpa bpb bph bpn bpp haa hab hah han hap hba hbb hbh hbn hbp hha hhb hhh hhn hhp hna hnb hnh hnn hpa hpb hph hpn hpp naa nab nah nan nap nba nbb nbn nbp nha nhb nhh nhn nhp nna nnb nnh nnn nnp npa npb nph npn npp p-p paa pab pah pan pap pba pbb pbn pbp pha phb phn php pn- pna pnb pnh pnn pnp ppa ppb pph ppn ppp