-up a-a a-b aaa aab aad aan aao aap aar aas aau ab- aba abb abd abn abo abp abr abs abu ad- ada adb add adn ado adp adr ads adu an- ana anb and ann ano anp anr ans anu aoa aob aod aon aoo aop aor aos aou ap- apa apb apd apn apo app apr aps apu ar- ara arb ard arn aro arp arr ars aru as- asa asb asd asn aso asp asr ass asu au- aua aub aud aun auo aup aur aus b-p b-u baa bab bad ban bao bap bar bas bau bba bbb bbd bbn bbo bbp bbr bbs bbu bda bdb bdd bdo bdp bdr bds bdu bna bnb bnd bnn bno bnp bnr bns bnu boa bob bod bon boo bop bor bos bou bpa bpb bpd bpn bpo bpp bpr bps bpu bra brb brd brn bro brp brr brs bru bsa bsb bsd bsn bso bsp bsr bss bsu bua bub bud bun buo bup bur bus buu daa dab dad dan dao dap dar das dau dba dbb dbd dbn dbo dbp dbr dbs dbu dda ddb ddd ddn ddo ddp ddr dds ddu dna dnb dnd dnn dno dnp dnr dns doa dob dod don doo dop dor dos dou dpa dpb dpd dpn dpo dpp dpr dps dpu dra drb drd drn dro drp drr drs dru dsa dsb dsd dsn dso dsp dsr dss dsu dua dub dud dun duo dup dur dus naa nab nad nan nao nap nar nas nau nba nbb nbd nbn nbo nbp nbr nbs nbu nda ndb ndd ndn ndo ndp ndr nds ndu nna nnb nnn nno nnp nns nnu no- noa nob nod non noo nop nor nos nou npa npb npd npn npo npp npr nps npu nra nrb nrd nrn nro nrp nrr nrs nru nsa nsb nsd nsn nso nsp nsr nss nsu nua nub nud nun nuo nup nur nus nuu oaa oab oad oan oao oap oar oas oau ob- oba obb obd obn obo obp obr obs obu oda odb odd odn odo odp odr ods odu on- ona onb ond onn ono onp onr ons onu oo- ooa oob ood oon ooo oop oor oos op- opa opb opd opn opo opp opr ops or- ora orb ord orn oro orp orr ors oru os- osa osb osd osn oso osp osr oss osu ou- oua oud oun ouo oup our ous p-p paa pab pad pan pao pap par pas pau pba pbb pbd pbn pbo pbp pbr pbs pbu pda pdb pdd pdn pdo pdp pdr pds pdu pn- pna pnb pnd pnn pno pnp pnr pns pnu poa pob pod pon poo pop por pos pou ppa ppb ppd ppn ppo ppp ppr pps ppu pra prb prd prn pro prp prr prs pru ps- psa psb psd psn pso psp psr pss psu pua pub pud pun pup pur pus puu ra- raa rab rad ran rao rap rar ras rau rba rbb rbd rbn rbo rbp rbr rbs rbu rda rdb rdd rdn rdo rdp rdr rds rdu rna rnb rnd rnn rno rnp rnr rns rnu roa rob rod ron roo rop ror ros rou rpa rpb rpd rpn rpo rpp rpr rps rpu rra rrb rrd rrn rrp rrr rrs rru rsa rsb rsd rsn rso rsp rsr rss rsu rua rub rud run ruo rup rur rus ruu saa sab sad san sao sap sar sas sau sba sbb sbd sbn sbo sbp sbr sbs sbu sda sdb sdd sdn sdo sdp sdr sds sdu sna snb snd snn sno snp snr sns snu soa sob sod son soo sop sor sos sou spa spb spd spn spo spp spr sps spu sr- sra srb srd srn sro srp srr srs ss- ssa ssb ssd ssn sso ssp ssr sss ssu sua sub sud sun suo sup sur sus suu ua- uaa uab uad uan uao uap uar uas uau uba ubb ubn ubo ubp ubr ubs ubu uda udb udd udn udo udp udr uds udu un- una unb und unn uno unp unr uns unu uoa uob uod uon uoo uop uor uos up- upa upb upd upn upo upp upr ups upu ur- ura urb urd urn uro urp urr urs uru usa usb usd usn uso usp usr uss usu uua uun uur uus uuu