a-a a-b aaa aab aah aan aap aar ab- aba abb abh abn abp abr aha ahb ahh ahn ahp ahr an- ana anb anh ann anp anr ap- apa apb aph apn app apr ar- ara arb arh arn arp arr b-p baa bab bah ban bap bar bba bbb bbh bbn bbp bbr bha bhb bhh bhp bhr bna bnb bnn bnp bnr bpa bpb bph bpn bpp bpr bra brb brh brn brp brr haa hab hah han hap har hba hbb hbh hbn hbp hbr hha hhb hhh hhn hhp hhr hna hnb hnh hnn hpa hpb hph hpn hpp hpr hr- hra hrb hrh hrn hrp hrr naa nab nah nan nap nar nba nbb nbn nbp nbr nha nhb nhh nhn nhp nhr nna nnb nnh nnn nnp npa npb nph npn npp npr nra nrb nrn nrp nrr p-p paa pab pah pan pap par pba pbb pbn pbp pbr pha phb phn php phr pn- pna pnb pnh pnn pnp pnr ppa ppb pph ppn ppp ppr pra prb prh prn prp prr ra- raa rab rah ran rap rar rba rbb rbh rbn rbp rbr rh- rha rhb rhh rhn rhp rhr rna rnb rnh rnn rnp rnr rpa rpb rph rpn rpp rpr rra rrb rrh rrn rrp rrr