-up b-p b-u bbb bbm bbo bbp bbr bbs bbt bbu bmb bmm bmo bmp bmr bms bmt bmu bob bom boo bop bor bos bot bou bpb bpm bpo bpp bpr bps bpt bpu brb brm bro brp brr brs brt bru bsb bsm bso bsp bsr bss bst bsu btb btm bto btp btr bts btt btu bub bum buo bup bur bus but buu m-o m-r mbb mbm mbo mbp mbr mbs mbt mbu mmb mmm mmo mmp mmr mms mmt mmu mob mom moo mop mor mos mot mou mpb mpm mpo mpp mpr mps mpt mpu mrb mrm mro mrp mrr mrs mrt mru msb msm mso msp msr mss mst msu mtb mtm mto mtp mtr mts mtt mtu mub mum mup mur mus mut muu ob- obb obm obo obp obr obs obt obu om- omb omm omo omp omr oms omt omu oo- oob oom ooo oop oor oos oot op- opb opm opo opp opr ops opt or- orb orm oro orp orr ors ort oru os- osb osm oso osp osr oss ost osu ot- otb otm oto otp otr ots ott otu ou- oum ouo oup our ous out p-p pbb pbm pbo pbp pbr pbs pbt pbu pmb pmm pmo pmp pmr pms pmt pmu pob pom poo pop por pos pot pou ppb ppm ppo ppp ppr pps ppt ppu prb prm pro prp prr prs prt pru ps- psb psm pso psp psr pss pst psu pt- ptb ptm pto ptp ptr pts ptt ptu pub pum pup pur pus put puu rbb rbm rbo rbp rbr rbs rbt rbu rmb rmm rmo rmp rmr rms rmt rob rom roo rop ror ros rot rou rpb rpm rpo rpp rpr rps rpt rpu rrb rrm rrp rrr rrs rrt rru rsb rsm rso rsp rsr rss rst rsu rtb rtm rto rtp rtr rts rtt rtu rub rum ruo rup rur rus rut ruu sbb sbm sbo sbp sbr sbs sbt sbu smb smm smo smp smr sms smt smu sob som soo sop sor sos sot sou spb spm spo spp spr sps spt spu sr- srb srm sro srp srr srs srt ss- ssb ssm sso ssp ssr sss sst ssu stb stm sto stp str sts stt stu sub sum suo sup sur sus sut suu tbb tbm tbo tbp tbr tbs tbt tbu tmb tmm tmo tmp tmr tms tmt tmu to- tob tom too top tor tos tot tou tpb tpm tpo tpp tpr tps tpt tpu trb trm tro trp trr trs trt tru tsb tsm tso tsp tsr tss tst tsu ttb ttm tto ttp ttr tts ttt ttu tub tum tuo tup tur tus tut tuu ubb ubo ubp ubr ubs ubt ubu um- umb umm umo ump umr ums umt umu uob uom uoo uop uor uos uot up- upb upm upo upp upr ups upt upu ur- urb urm uro urp urr urs urt uru usb usm uso usp usr uss ust usu utb utm uto utp utr uts utt utu uum uur uus uut uuu

-ous bbbb bbbs bbpr bmop bmpt bmts bmus bobb bobo bobs bobu bomb bomp boms bomt bomu boob boom boop boor boos boot bopp bops bor- borm boro borr bors bort boru bosm boso boss bost bosu botb boto bots bott boum boup bour bous bout bpms bpot bpsu brob brom broo bror bros brot brou brrm brrr brrs brsb brsr brst brum brup brus brut bsms bsmt bsos bspp bspr bsrm bssm bsts bsup btbp btob btor btps btrt btss bttb btus bubb bubo bubs bubu bum- bumb bump bums bups bur- burb burm buro burp burr burs burt buru buss bust busu but- buto buts butt buus mbbs mbms mbou mbps mbrs mbus mmmm mmms mmor mmpr mmpu mmrp mmst mmsu mmts mmus mobb mobo mobs momo moms momu moob moop moor moos moot mopp mops morb moro mors mort moru moso moss most mosu motb motm moto mots mott motu moup mour mous mout mppp mpps mpro mprp mpst mptp mrbb mrbm mrbs mrps mrtm mrts mrtt msmb msmm msms msmu msop msor mspb mspp msrb msrp msrt mssm mssp mssr msst mstp mstr msts msus mtbo mtbs mtom mtor mtrr mtss mtst mttr mtts mubo mubs mumm mumo mump mums mumu muos mups muro murr murs murt muru muso muss must musu muto muts mutt mutu muut obbo obor obos obot obro obsr obss obst obts obus ombo ombu omo- omoo omor omps ompt omro omuo omus ooms oooo ooos oops oort oost ootb ootp oots oous opms opo- opor opos oppo opps opsm opsu opto opts opus orbb orbo orbs orbu ormo oro- orom oror oros orot orps orro orrs orso orsu orto orts orub orum orup orus osbp osm- osmo osoo osor osos ospm osro ossb osso ossu ostr osts osum otbs oto- otoo otor otos otpp otro otrs otso otsu otto otts ottu otur otus oubs our- ouro ours ourt oust out- outb outo outs ouu- pbmr pbrs pbsp pmbr pmmp pmmu pmos pmpm pmpo pmrs pmrt pmts pmut pobo pobs pomo pomp poms pomu poop poor poos poot pop- popo popp pops popt porb poro porr pors port posb poso poss post poto pots pott potu poum poup pour pous pout ppms ppos pppo pppp ppps pprm ppru ppss ppts pptt ppur prbs pro- prob prom proo prop pros prot prou prps prrm prrs prso prss prtm prtp prtr prum prus prut pruu psbr psbt psos psou pspp pspr psps psrp pssm psso psst psts pstu ptmp ptms ptop pubs pubu pump pups pupu pur- purb puro purp purr purs puru puss pust put- puto puts putt putu rbbb rbbr rbbs rbms rbsp rbss rbst rmbs rmrp rmsp rmst rmtu rob- robb robo robs robt robu romb romm romo romp roms roob room roop roor roos root ropo rops roro rort roru roso rosp ross rost roto rotr rots rott roub roum