a-a a-b aaa aab aad aah aap aar ab- aba abb abd abh abp abr ad- ada adb add adh adp adr aha ahb ahd ahh ahp ahr ap- apa apb apd aph app apr ar- ara arb ard arh arp arr b-p baa bab bad bah bap bar bba bbb bbd bbh bbp bbr bda bdb bdd bdh bdp bdr bha bhb bhd bhh bhp bhr bpa bpb bpd bph bpp bpr bra brb brd brh brp brr daa dab dad dah dap dar dba dbb dbd dbh dbp dbr dda ddb ddd ddh ddp ddr dh- dha dhb dhd dhh dhp dhr dpa dpb dpd dph dpp dpr dra drb drd drp drr haa hab had hah hap har hba hbb hbd hbh hbp hbr hda hdb hdd hdh hdp hdr hha hhb hhd hhh hhp hhr hpa hpb hpd hph hpp hpr hr- hra hrb hrd hrh hrp hrr p-p paa pab pad pah pap par pba pbb pbd pbp pbr pda pdb pdd pdh pdp pdr pha phb phd php phr ppa ppb ppd pph ppp ppr pra prb prd prh prp prr ra- raa rab rad rah rap rar rba rbb rbd rbh rbp rbr rda rdb rdd rdh rdp rdr rh- rha rhb rhd rhh rhp rhr rpa rpb rpd rph rpp rpr rra rrb rrd rrh rrp rrr