a-a a-b a-c aaa aab aac aad aah aan aap aar ab- aba abb abc abd abh abn abp abr ac- aca acb acc acd ach acn acp acr ad- ada adb adc add adh adn adp adr aha ahb ahc ahd ahh ahn ahp ahr an- ana anb anc and anh ann anp anr ap- apa apb apc apd aph apn app apr ar- ara arb arc ard arh arn arp arr b-p baa bab bac bad bah ban bap bar bba bbb bbc bbd bbh bbn bbp bbr bca bcb bcc bcd bch bcn bcp bcr bda bdb bdc bdd bdh bdp bdr bha bhb bhc bhd bhh bhp bhr bna bnb bnc bnd bnn bnp bnr bpa bpb bpc bpd bph bpn bpp bpr bra brb brd brh brn brp brr c-- caa cab cac cad cah can cap car cba cbb cbc cbd cbh cbn cbp cbr cca ccb ccc ccd cch ccn ccp ccr cda cdb cdc cdd cdh cdn cdp cdr ch- cha chb chc chd chh chn chp chr cn- cna cnb cnc cnd cnh cnn cnp cnr cpa cpb cpc cpd cph cpn cpp cpr cra crb crc crd crh crn crp crr daa dab dac dad dah dan dap dar dba dbb dbc dbd dbh dbn dbp dbr dca dcb dcc dcd dcn dcp dcr dda ddb ddc ddd ddh ddn ddp ddr dh- dha dhb dhc dhd dhh dhp dhr dna dnb dnc dnd dnh dnn dnp dnr dpa dpb dpc dpd dph dpn dpp dpr dra drb drc drd drn drp drr haa hab hac had hah han hap har hba hbb hbc hbd hbh hbn hbp hbr hca hcb hcc hcd hch hcn hcp hcr hda hdb hdc hdd hdh hdn hdp hdr hha hhb hhc hhd hhh hhn hhp hhr hna hnb hnc hnd hnh hnn hpa hpb hpc hpd hph hpn hpp hpr hr- hra hrb hrc hrd hrh hrn hrp hrr naa nab nac nad nah nan nap nar nba nbb nbc nbd nbn nbp nbr nca ncb ncc ncd nch ncn ncp ncr nda ndb ndc ndd ndh ndn ndp ndr nha nhb nhc nhd nhh nhn nhp nhr nna nnb nnc nnh nnn nnp npa npb npc npd nph npn npp npr nra nrb nrc nrd nrn nrp nrr p-p paa pab pac pad pah pan pap par pba pbb pbc pbd pbn pbp pbr pca pcb pcc pcd pch pcn pcp pcr pda pdb pdc pdd pdh pdn pdp pdr pha phb phc phd phn php phr pn- pna pnb pnc pnd pnh pnn pnp pnr ppa ppb ppc ppd pph ppn ppp ppr pra prb prc prd prh prn prp prr ra- raa rab rac rad rah ran rap rar rba rbb rbc rbd rbh rbn rbp rbr rca rcb rcc rcd rch rcn rcp rcr rda rdb rdc rdd rdh rdn rdp rdr rh- rha rhb rhc rhd rhh rhn rhp rhr rna rnb rnc rnd rnh rnn rnp rnr rpa rpb rpc rpd rph rpn rpp rpr rra rrb rrc rrd rrh rrn rrp rrr