-up b-p b-u bbb bbd bbo bbp bbr bbs bbu bby bdb bdd bdo bdp bdr bds bdu bdy bob bod boo bop bor bos bou boy bpb bpd bpo bpp bpr bps bpu bpy brb brd bro brp brr brs bru bry bsb bsd bso bsp bsr bss bsu bsy bub bud buo bup bur bus buu buy by- byd byo byp byr bys byu dbb dbd dbo dbp dbr dbs dbu dby ddb ddd ddo ddp ddr dds ddu ddy dob dod doo dop dor dos dou doy dpb dpd dpo dpp dpr dps dpu drb drd dro drp drr drs dru dry dsb dsd dso dsp dsr dss dsu dsy dub dud duo dup dur dus duy dy- dyb dyd dyo dyp dyr dys dyu dyy ob- obb obd obo obp obr obs obu oby odb odd odo odp odr ods odu oo- oob ood ooo oop oor oos op- opb opd opo opp opr ops opy or- orb ord oro orp orr ors oru ory os- osb osd oso osp osr oss osu ou- oud ouo oup our ous oyd oyo oys p-p pbb pbd pbo pbp pbr pbs pbu pby pdb pdd pdo pdp pdr pds pdu pob pod poo pop por pos pou poy ppb ppd ppo ppp ppr pps ppu prb prd pro prp prr prs pru pry ps- psb psd pso psp psr pss psu psy pub pud pup pur pus puu puy py- pyb pyd pyo pyr pys pyu rbb rbd rbo rbp rbr rbs rbu rdb rdd rdo rdp rdr rds rdu rdy rob rod roo rop ror ros rou roy rpb rpd rpo rpp rpr rps rpu rrb rrd rrp rrr rrs rru rsb rsd rso rsp rsr rss rsu rub rud ruo rup rur rus ruu ruy ry- ryd ryo ryr rys ryu ryy sbb sbd sbo sbp sbr sbs sbu sby sdb sdd sdo sdp sdr sds sdu sdy sob sod soo sop sor sos sou soy spb spd spo spp spr sps spu spy sr- srb srd sro srp srr srs sry ss- ssb ssd sso ssp ssr sss ssu sub sud suo sup sur sus suu suy sy- syb syd syp syr sys syu ubb ubo ubp ubr ubs ubu uby udb udd udo udp udr uds udu uob uod uoo uop uor uos up- upb upd upo upp upr ups upu ur- urb urd uro urp urr urs uru ury usb usd uso usp usr uss usu uur uus uuu uyo uys uyu ybp ybr ybs yby ydo yds ydy yob yod yoo yop yor yos you yoy ypd ypo yps ypu yro yrp yrs yru ysb yso ysp ysr yss ysu ysy yud yuo yup yur yus yuu yuy yyb yys yyu yyy