-up a-a a-b aaa aab aad aan aap aar aau ab- aba abb abd abn abp abr abu ad- ada adb add adn adp adr adu an- ana anb and ann anp anr anu ap- apa apb apd apn app apr apu ar- ara arb ard arn arp arr aru au- aua aub aud aun aup aur b-p b-u baa bab bad ban bap bar bau bba bbb bbd bbn bbp bbr bbu bda bdb bdd bdp bdr bdu bna bnb bnd bnn bnp bnr bnu bpa bpb bpd bpn bpp bpr bpu bra brb brd brn brp brr bru bua bub bud bun bup bur buu daa dab dad dan dap dar dau dba dbb dbd dbn dbp dbr dbu dda ddb ddd ddn ddp ddr ddu dna dnb dnd dnn dnp dnr dpa dpb dpd dpn dpp dpr dpu dra drb drd drn drp drr dru dua dub dud dun dup dur naa nab nad nan nap nar nau nba nbb nbd nbn nbp nbr nbu nda ndb ndd ndn ndp ndr ndu nna nnb nnn nnp nnu npa npb npd npn npp npr npu nra nrb nrd nrn nrp nrr nru nua nub nud nun nup nur nuu p-p paa pab pad pan pap par pau pba pbb pbd pbn pbp pbr pbu pda pdb pdd pdn pdp pdr pdu pn- pna pnb pnd pnn pnp pnr pnu ppa ppb ppd ppn ppp ppr ppu pra prb prd prn prp prr pru pua pub pud pun pup pur puu ra- raa rab rad ran rap rar rau rba rbb rbd rbn rbp rbr rbu rda rdb rdd rdn rdp rdr rdu rna rnb rnd rnn rnp rnr rnu rpa rpb rpd rpn rpp rpr rpu rra rrb rrd rrn rrp rrr rru rua rub rud run rup rur ruu ua- uaa uab uad uan uap uar uau uba ubb ubn ubp ubr ubu uda udb udd udn udp udr udu un- una unb und unn unp unr unu up- upa upb upd upn upp upr upu ur- ura urb urd urn urp urr uru uua uun uur uuu