a-a a-b aaa aab aah aak aap ab- aba abb abh abk abp aha ahb ahh ahk ahp aka akb akh akk akp ap- apa apb aph apk app b-p baa bab bah bak bap bba bbb bbh bbk bbp bha bhb bhh bhk bhp bka bkb bkk bkp bpa bpb bph bpp haa hab hah hak hap hba hbb hbh hbk hbp hha hhb hhh hhk hhp hka hkb hkh hkk hkp hpa hpb hph hpk hpp ka- kaa kab kah kak kap kba kbb kbh kbk kbp kha khh khk kkb kkh kkk kkp kpa kph kpk kpp p-p paa pab pah pak pap pba pbb pbk pbp pha phb phk php pka pkb pkp ppa ppb pph ppk ppp