-up b-p b-u bbb bbf bbo bbp bbr bbs bbu bfb bff bfo bfp bfr bfs bfu bob bof boo bop bor bos bou bpb bpf bpo bpp bpr bps bpu brb brf bro brp brr brs bru bsb bsf bso bsp bsr bss bsu bub buf buo bup bur bus buu fbb fbf fbo fbp fbr fbs fbu fff ffo ffp ffr ffs ffu fob fof foo fop for fos fou fpb fpo fpp fpr fps fpu frb frf fro frp frr frs fru fsb fsf fso fsp fsr fss fsu fub fuf fuo fup fur fus fuu ob- obb obf obo obp obr obs obu of- ofb off ofo ofp ofr ofs ofu oo- oob oof ooo oop oor oos op- opb opf opo opp opr ops or- orb orf oro orp orr ors oru os- osb osf oso osp osr oss osu ou- ouf ouo oup our ous p-p pbb pbf pbo pbp pbr pbs pbu pfb pff pfo pfp pfr pfs pfu pob pof poo pop por pos pou ppb ppf ppo ppp ppr pps ppu prb prf pro prp prr prs pru ps- psb psf pso psp psr pss psu pub puf pup pur pus puu rbb rbf rbo rbp rbr rbs rbu rfb rff rfo rfp rfr rfs rfu rob rof roo rop ror ros rou rpb rpf rpo rpp rpr rps rpu rrb rrf rrp rrr rrs rru rsb rsf rso rsp rsr rss rsu rub ruf ruo rup rur rus ruu sbb sbf sbo sbp sbr sbs sbu sfb sff sfo sfp sfr sfs sfu sob sof soo sop sor sos sou spb spf spo spp spr sps spu sr- srb srf sro srp srr srs ss- ssb ssf sso ssp ssr sss ssu sub suf suo sup sur sus suu ubb ubf ubo ubp ubr ubs ubu uff ufo ufp ufr ufs ufu uob uoo uop uor uos up- upb upf upo upp upr ups upu ur- urb urf uro urp urr urs uru usb usf uso usp usr uss usu uur uus uuu

-ous bbbb bbbs bbpr bffs bfpo bfpp bfsr bobb bobo bobs bobu boff bofs bofu boob boof boop boor boos bopp bops bor- borf boro borr bors boru boso boss bosu bouf boup bour bous bpsu brfu brob broo bror bros brou brrr brrs brsb brsr brup brus bsff bsfs bsos bspp bspr bsup bubb bubo bubs bubu buff bufo bufr bups bur- burb buro burp burr burs buru buss busu buus fbop fbrs fbus ffff ffps ffrr ffss fobs fofo foof foos fopp fops for- forb foro forr fors fosb foso foss foup four fous fprf frob frop fros frou frps frsb frso frub fsfo fspf fssf fssp fubb fubs fubu fuff fufu fuor fur- furo furr furs fuso fuss fusu obbo obor obos obro obsr obss obus off- offo offr offs offu ofor ofus ooff oofs oooo ooos oops oous opo- opor opos oppo opps opsu opus orbb orbo orbs orbu orff orfs orfu oro- orof oror oros orps orro orrs orso orsu orub orup orus osbp osoo osor osos osro ossb osso ossu oubs ouff our- ouro ours ouu- pbrf pbrs pbsp pfff pffr pfps pobo pobs poff poof poop poor poos pop- popo popp pops porb poro porr pors posb poso poss pouf poup pour pous ppos pppo pppp ppps pprf ppru ppsf ppss ppur prbs prfs pro- prob prof proo prop pros prou prps prrs prso prss pruf prus pruu psbr psfs psos psou pspp pspr psps psrp psso pubs pubu puff pups pupu pur- purb puro purp purr purs puru puss rbbb rbbr rbbs rbsp rbss rob- robb robo robs robu roff rofo roob roof roop roor roos ropo rops roro roru roso rosp ross roub rouf roup rous rpob rpof rpos rpps rrrr rrsp rsos rspb rspo rsps rubb rubp rubs rubu ruff rufo rupp ruro rurp rurs ruru ruso russ rusu s-os sbbs sbor sbsp sbus sfor sfos sfro sfss sfsu sobo sobp sobr sobs sobu sofo soof soop soor soos sopo sopp sops sopu sorb soro sorr sors soru soso soss souf soup sour sous spfs spoo spop spor spos sppf spps spro sprs spso spsp spss spur spus sros srps srsp srub ssbr ssfp ssop sspf sspo ssps ssrs sssb sssf ssss sub- subb subo subs suf- suff sufr sufs sufu suor suos sup- supo supp supr sups sur- surf suro surp surr surs suru sus- suso susp suss susu suus u-rp ubbo ubos ufos ufpb uofo uor- upor upos uppp uppu upup urbs urff uro- uroo urpo urso urss ursu urup urur urus usbr usbs usfs usos uspo uspp usps ussb ussf ussr usss ussu usus uuuu

bbuss bo-bo bobos bobr bobup boffo boffs boobs boofs boops boors booru borbo boro- boroo boros borou borro borsu borup borus bosor bosso bours brobo brobs broos bross brous brrrr bruff bruss bsous buffo buffs bufos burbs buroo buros burps burro burrs burru burus busso bussu busur busuu fofos fopos forbs foros forro forso forss forur forus fourb fouro fours frobs froop froup fu-fu fubbs fubus fuffs furbo furo- furor furps furrs furus fuso- fusor fusus o-r-b oboro offof ofosu ofour ofpop ooooo opobo oppos orbus orfor orobo oroso orosu oruro ososo ossos ossur osusu ouoro pforp po-po poofs poopo poops poors popop popos poppo popup poro- poros porro porur porus posof pouff poufs pours pouss probo probs proff profs proof proor prop- propp propr props pros- proso pross pruss psor- psoup pubo- puffs puppo puro- puros purrs purus puurs ro-ro robbo robbs robo- robop robor robur rofor roofs roops ropos rorbu rosso rosss rosu roups rprop rrsps rsssf rubof rubor rubup rubus ruffo ruffs rufo- rufus rusor russo s-bus s-o-r sfouf so-so sobor sooru sopor soppo sopup sorbo sorbs soror soros sorso sorsu sorus soss- sosus souff soups sours sous- spoof spoor spor- sporo spors sposo spurr spurs sroof srprb sssrb sssss subbu subos subss suffr suffs supor supps supur surbo surfs surpu surur surus susso susus u-pop