-up a-a a-b aaa aab aad aao aap aar aau ab- aba abb abd abo abp abr abu ad- ada adb add ado adp adr adu aoa aob aod aoo aop aor aou ap- apa apb apd apo app apr apu ar- ara arb ard aro arp arr aru au- aua aub aud auo aup aur b-p b-u baa bab bad bao bap bar bau bba bbb bbd bbo bbp bbr bbu bda bdb bdd bdo bdp bdr bdu boa bob bod boo bop bor bou bpa bpb bpd bpo bpp bpr bpu bra brb brd bro brp brr bru bua bub bud buo bup bur buu daa dab dad dao dap dar dau dba dbb dbd dbo dbp dbr dbu dda ddb ddd ddo ddp ddr ddu doa dob dod doo dop dor dou dpa dpb dpd dpo dpp dpr dpu dra drb drd dro drp drr dru dua dub dud duo dup dur oaa oab oad oao oap oar oau ob- oba obb obd obo obp obr obu oda odb odd odo odp odr odu oo- ooa oob ood ooo oop oor op- opa opb opd opo opp opr or- ora orb ord oro orp orr oru ou- oua oud ouo oup our p-p paa pab pad pao pap par pau pba pbb pbd pbo pbp pbr pbu pda pdb pdd pdo pdp pdr pdu poa pob pod poo pop por pou ppa ppb ppd ppo ppp ppr ppu pra prb prd pro prp prr pru pua pub pud pup pur puu ra- raa rab rad rao rap rar rau rba rbb rbd rbo rbp rbr rbu rda rdb rdd rdo rdp rdr rdu roa rob rod roo rop ror rou rpa rpb rpd rpo rpp rpr rpu rra rrb rrd rrp rrr rru rua rub rud ruo rup rur ruu ua- uaa uab uad uao uap uar uau uba ubb ubo ubp ubr ubu uda udb udd udo udp udr udu uoa uob uod uoo uop uor up- upa upb upd upo upp upr upu ur- ura urb urd uro urp urr uru uua uur uuu