a-a a-b aaa aab aah aan aao aap aar aas ab- aba abb abh abn abo abp abr abs aha ahb ahh ahn aho ahp ahr ahs an- ana anb anh ann ano anp anr ans aoa aob aoh aon aoo aop aor aos ap- apa apb aph apn apo app apr aps ar- ara arb arh arn aro arp arr ars as- asa asb ash asn aso asp asr ass b-p baa bab bah ban bao bap bar bas bba bbb bbh bbn bbo bbp bbr bbs bha bhb bhh bho bhp bhr bhs bna bnb bnn bno bnp bnr bns boa bob boh bon boo bop bor bos bpa bpb bph bpn bpo bpp bpr bps bra brb brh brn bro brp brr brs bsa bsb bsh bsn bso bsp bsr bss haa hab hah han hao hap har has hba hbb hbh hbn hbo hbp hbr hbs hha hhb hhh hhn hho hhp hhr hhs hna hnb hnh hnn hno hns hoa hob hoh hon hoo hop hor hos hpa hpb hph hpn hpo hpp hpr hps hr- hra hrb hrh hrn hro hrp hrr hrs hsa hsb hsh hsn hsp hsr hss naa nab nah nan nao nap nar nas nba nbb nbn nbo nbp nbr nbs nha nhb nhh nhn nhp nhr nhs nna nnb nnh nnn nno nnp nns no- noa nob noh non noo nop nor nos npa npb nph npn npo npp npr nps nra nrb nrn nro nrp nrr nrs nsa nsb nsh nsn nso nsp nsr nss oaa oab oah oan oao oap oar oas ob- oba obb obh obn obo obp obr obs oha ohh ohn oho ohp ohr ohs on- ona onb onh onn ono onp onr ons oo- ooa oob ooh oon ooo oop oor oos op- opa opb oph opn opo opp opr ops or- ora orb orh orn oro orp orr ors os- osa osb osh osn oso osp osr oss p-p paa pab pah pan pao pap par pas pba pbb pbn pbo pbp pbr pbs pha phb phn pho php phr phs pn- pna pnb pnh pnn pno pnp pnr pns poa pob poh pon poo pop por pos ppa ppb pph ppn ppo ppp ppr pps pra prb prh prn pro prp prr prs ps- psa psb psh psn pso psp psr pss ra- raa rab rah ran rao rap rar ras rba rbb rbh rbn rbo rbp rbr rbs rh- rha rhb rhh rhn rho rhp rhr rhs rna rnb rnh rnn rno rnp rnr rns roa rob roh ron roo rop ror ros rpa rpb rph rpn rpo rpp rpr rps rra rrb rrh rrn rrp rrr rrs rsa rsb rsh rsn rso rsp rsr rss saa sab sah san sao sap sar sas sba sbb sbh sbn sbo sbp sbr sbs sh- sha shb shh shn sho shp shr shs sna snb snn sno snp snr sns soa sob soh son soo sop sor sos spa spb sph spn spo spp spr sps sr- sra srb srh srn sro srp srr srs ss- ssa ssb ssh ssn sso ssp ssr sss