a-a a-b a-c aaa aab aac aad aah aap aar ab- aba abb abc abd abh abp abr ac- aca acb acc acd ach acp acr ad- ada adb adc add adh adp adr aha ahb ahc ahd ahh ahp ahr ap- apa apb apc apd aph app apr ar- ara arb arc ard arh arp arr b-p baa bab bac bad bah bap bar bba bbb bbc bbd bbh bbp bbr bca bcb bcc bcd bch bcp bcr bda bdb bdc bdd bdh bdp bdr bha bhb bhc bhd bhh bhp bhr bpa bpb bpc bpd bph bpp bpr bra brb brd brh brp brr c-- caa cab cac cad cah cap car cba cbb cbc cbd cbh cbp cbr cca ccb ccc ccd cch ccp ccr cda cdb cdc cdd cdh cdp cdr ch- cha chb chc chd chh chp chr cpa cpb cpc cpd cph cpp cpr cra crb crc crd crh crp crr daa dab dac dad dah dap dar dba dbb dbc dbd dbh dbp dbr dca dcb dcc dcd dcp dcr dda ddb ddc ddd ddh ddp ddr dh- dha dhb dhc dhd dhh dhp dhr dpa dpb dpc dpd dph dpp dpr dra drb drc drd drp drr haa hab hac had hah hap har hba hbb hbc hbd hbh hbp hbr hca hcb hcc hcd hch hcp hcr hda hdb hdc hdd hdh hdp hdr hha hhb hhc hhd hhh hhp hhr hpa hpb hpc hpd hph hpp hpr hr- hra hrb hrc hrd hrh hrp hrr p-p paa pab pac pad pah pap par pba pbb pbc pbd pbp pbr pca pcb pcc pcd pch pcp pcr pda pdb pdc pdd pdh pdp pdr pha phb phc phd php phr ppa ppb ppc ppd pph ppp ppr pra prb prc prd prh prp prr ra- raa rab rac rad rah rap rar rba rbb rbc rbd rbh rbp rbr rca rcb rcc rcd rch rcp rcr rda rdb rdc rdd rdh rdp rdr rh- rha rhb rhc rhd rhh rhp rhr rpa rpb rpc rpd rph rpp rpr rra rrb rrc rrd rrh rrp rrr