-up b-p b-u bbb bbg bbo bbp bbr bbs bbu bgb bgg bgo bgp bgr bgs bgu bob bog boo bop bor bos bou bpb bpg bpo bpp bpr bps bpu brb brg bro brp brr brs bru bsb bsg bso bsp bsr bss bsu bub bug buo bup bur bus buu g-p gbg gbo gbp gbr gbs gbu ggb ggg ggo ggp ggr ggs ggu gob gog goo gop gor gos gou gpb gpg gpo gpp gpr gps gpu grb grg gro grp grr grs gru gsb gsg gso gsp gsr gss gsu gu- gub gug guo gup gur gus guu ob- obb obg obo obp obr obs obu ogg ogo ogp ogs oo- oob oog ooo oop oor oos op- opb opg opo opp opr ops or- orb org oro orp orr ors oru os- osb osg oso osp osr oss osu ou- ouo oup our ous p-p pbb pbg pbo pbp pbr pbs pbu pgb pgg pgo pgp pgr pgs pob pog poo pop por pos pou ppb ppg ppo ppp ppr pps ppu prb prg pro prp prr prs pru ps- psb psg pso psp psr pss psu pub pug pup pur pus puu rbb rbg rbo rbp rbr rbs rbu rgb rgg rgo rgp rgr rgs rob rog roo rop ror ros rou rpb rpg rpo rpp rpr rps rpu rrb rrg rrp rrr rrs rru rsb rsg rso rsp rsr rss rsu rub rug ruo rup rur rus ruu sbb sbg sbo sbp sbr sbs sbu sgb sgg sgo sgp sgr sgs sgu sob sog soo sop sor sos sou spb spg spo spp spr sps spu sr- srb srg sro srp srr srs ss- ssb ssg sso ssp ssr sss ssu sub sug suo sup sur sus suu ubb ubg ubo ubp ubr ubs ubu ugb ugg ugo ugp ugr ugs ugu uob uog uoo uop uor uos up- upb upg upo upp upr ups upu ur- urb urg uro urp urr urs uru usb usg uso usp usr uss usu uug uur uus uuu

-ous bbbb bbbs bbpr bbrg bggs bobb bobo bobs bobu bogg bogo bogs boob boog boop boor boos bopp bops bor- borg boro borr bors boru boso boss bosu boup bour bous bpsu brob brog broo bror bros brou brrr brrs brsb brsr brug brup brus bsgs bsos bspp bspr bsup bubb bubo bubs bubu bugg bugo bugs bups bur- burb burg buro burp burr burs buru buss busu buus gbbo gbbs gggg ggpo ggss gobo gobs gogo gogs goog goop goor goos gopo gops gopu gorb gorg goro gorp gorr gors goso goss gosu gou- goug goup gour gous gpgp gpos gprp gprs gpsg gpso gpss grbr grob grog groo grop gror gros grou grps grrr grrs grss grub grug grur grus gsos gsur gubb gubs gubu gugb gugg gugu guos gups gurb gurg guro gurr gurs guru gusb guss guus obbo obor obos obro obsr obss obus ogb ogog ogou ogpu ogro ogus oooo ooos oops oous opo- opor opos oppo opps opsu opus orbb orbo orbs orbu orgo orgs oro- oror oros orps orro orrs orso orsu orub orup orus osbp osoo osor osos osro ossb osso ossu oubs our- ouro ours ouu- pbrs pbsp pgou pgpu pgss pgup pobo pobs pogg pogo pogs poop poor poos pop- popo popp pops porb porg poro porr pors posb poso poss poup pour pous ppos pppo pppp ppps ppru ppss ppur prbs prgs pro- prob prog proo prop pros prou prps prrs prso prss prus pruu psbr psgr psos psou pspp pspr psps psrp psso pubs pubu pugo pugs pugu pups pupu pur- purb purg puro purp purr purs puru puss rbbb rbbr rbbs rbsp rbss rob- robb robo robs robu rogg rogo roob roog roop roor roos ropo rops roro roru roso rosp ross roub roup rous rpgs rpob rpos rpps rrrr rrsp rsgb rsos rspb rspo rsps rubb rubp rubs rubu rugg rugs rupp ruro rurp rurs ruru ruso russ rusu s-os sbbs sbor sbsp sbus sggg sggs sgps sgro sgss sobo sobp sobr sobs sobu sogo sogs soog soop soor soos sopo sopp sops sopu sorb sorg soro sorr sors soru soso soss soup sour sous spgb spoo spop spor spos spps spro sprs spso spsp spss spug spur spus srgb sros srps srsp srub ssbr ssgs ssop sspo ssps ssrg ssrs sssb ssss sub- subb subg subo subs sug- sugg sugo suor suos sup- supo supp supr sups sur- surg suro surp surr surs suru sus- suso susp suss susu suus u-rp ubbo ubos uggo uggs ugos ugro ugur uguu uor- upgo upor upos uppp uppu upup urbs urgu uro- uroo urpo urso urss ursu urup urur urus usbr usbs usgo usgp usog usos uspo uspp usps ussb ussr usss ussu usus uuuu

bbuss bo-bo bobos bobr bobup boggs bogor bogos bogu bogur bogus boobs boops boors booru borbo borgo borgs borgu boro- boroo boros borou borro borsu borup borus bosor bosso bourg bours brobo brobs brogs broos bross brous brrrr brugg bruss bsous bssgp bugoo burbs burgo burgs burgu buroo buros burps burro burrs burru burus busog busso bussu busur busuu go-go go-oo go-op gobbo gobos gobus gogos gogro goobo googs goops gopro gorgo gorps gosub gours grgur grogg grogs groop groos gropp gross grosu group grrrr grubb grubs gruss gubbo gubos gubru guroo guros gurps gurro gursu gurur gurus o-r-b oboro og-os ogogo ogors ogugu ooooo opobo oppos orbus orobo oroso orosu orrgo oruro osgur ososo ossos ossur osusu ouoro po-po pogos poopo poops poors popop popos poppo popup porgo poro- porog poros porro porur porus pours pouss probo probs progg progs proor prop- propp propr props pros- proso pross pruss psor- psoup pubo- puppo puro- puros purrs purus puurs ro-ro robbo robbs robo- robop robor robur roops ropos rorbu rosso rosss rosu roups rprop rrsps rubor rubup rubus rusor russo s-bus s-gps s-o-r s-rpg so-so sobor sogou sooru sopor soppo sopup sorbo sorbs sorgo sorgu soror soros sorso sorsu sorus