-up b-p b-u bbb bbn bbo bbp bbr bbs bbt bbu bnb bnn bno bnp bnr bns bnt bnu bob bon boo bop bor bos bot bou bpb bpn bpo bpp bpr bps bpt bpu brb brn bro brp brr brs brt bru bsb bsn bso bsp bsr bss bst bsu btb btn bto btp btr bts btt btu bub bun buo bup bur bus but buu nbb nbn nbo nbp nbr nbs nbt nbu nnb nnn nno nnp nns nnt nnu no- nob non noo nop nor nos not nou npb npn npo npp npr nps npt npu nrb nrn nro nrp nrr nrs nrt nru nsb nsn nso nsp nsr nss nst nsu ntb ntn nto ntp ntr nts ntt ntu nub nun nuo nup nur nus nut nuu ob- obb obn obo obp obr obs obt obu on- onb onn ono onp onr ons ont onu oo- oob oon ooo oop oor oos oot op- opb opn opo opp opr ops opt or- orb orn oro orp orr ors ort oru os- osb osn oso osp osr oss ost osu ot- otb otn oto otp otr ots ott otu ou- oun ouo oup our ous out p-p pbb pbn pbo pbp pbr pbs pbt pbu pn- pnb pnn pno pnp pnr pns pnt pnu pob pon poo pop por pos pot pou ppb ppn ppo ppp ppr pps ppt ppu prb prn pro prp prr prs prt pru ps- psb psn pso psp psr pss pst psu pt- ptb ptn pto ptp ptr pts ptt ptu pub pun pup pur pus put puu rbb rbn rbo rbp rbr rbs rbt rbu rnb rnn rno rnp rnr rns rnt rnu rob ron roo rop ror ros rot rou rpb rpn rpo rpp rpr rps rpt rpu rrb rrn rrp rrr rrs rrt rru rsb rsn rso rsp rsr rss rst rsu rtb rtn rto rtp rtr rts rtt rtu rub run ruo rup rur rus rut ruu sbb sbn sbo sbp sbr sbs sbt sbu snb snn sno snp snr sns snt snu sob son soo sop sor sos sot sou spb spn spo spp spr sps spt spu sr- srb srn sro srp srr srs srt ss- ssb ssn sso ssp ssr sss sst ssu stb stn sto stp str sts stt stu sub sun suo sup sur sus sut suu tbb tbn tbo tbp tbr tbs tbt tbu tnb tnn tno tnp tnr tns tnt to- tob ton too top tor tos tot tou tpb tpn tpo tpp tpr tps tpt tpu trb trn tro trp trr trs trt tru tsb tsn tso tsp tsr tss tst tsu ttb ttn tto ttp ttr tts ttt ttu tub tun tuo tup tur tus tut tuu ubb ubn ubo ubp ubr ubs ubt ubu un- unb unn uno unp unr uns unt unu uob uon uoo uop uor uos uot up- upb upn upo upp upr ups upt upu ur- urb urn uro urp urr urs urt uru usb usn uso usp usr uss ust usu utb utn uto utp utr uts utt utu uun uur uus uut uuu

-ous bbbb bbbs bbpr bnor bnpp bnrr bnss bobb bobo bobs bobu bonn bono bons bont bonu boob boon boop boor boos boot bopp bops bor- born boro borr bors bort boru bosn boso boss bost bosu botb botn boto bots bott boun boup bour bous bout bpot bpsu brno brns brob bron broo bror bros brot brou brrr brrs brsb brsr brst brun brup brus brut bsns bson bsos bspp bspr bsts bsup btbp btob btor btps btrt btss bttb btus bubb bubo bubs bubu bunb bunn buno buns bunt bunu buon bups bur- burb burn buro burp burr burs burt buru buss bust busu but- buto buts butt buus n-up nbbo nbpp nbps nbsp nnnn nnos nnot nnpr nnss nntn nobo nobs nobu non- nonn nono nons nont nonu noo- noob noon nooo noop noor noos noot nops nor- norb norn noro norr nors nort nos- noss nost nosu not- noto nots nott noun noup nour nous nout nprt npss nptn nron nrpn nrps nrsp nrts nsbo nsnr nsos nsou nsps nssb nsso nssp nssr nsss nstp nsts nstu nsub ntnu ntop ntru ntsb ntss ntsu ntto nttr nubs nunn nuno nuns nunt nuon nups nurn nurp nurr nurs nurt nuru nuss nust nusu nuts nutt nutu obbo obon obor obos obot obro obsn obsr obss obst obts obus onno onon onor onos onpt onpu onso onst ont- onto onup onur onus onut oons oont oooo ooos oops oort oost ootb ootp oots oous opo- opon opor opos oppo opps opsu optn opto opts opus orbb orbo orbs orbu orno orns oro- oron oror oros orot orps orro orrs orso orsu orto orts orub orup orus osbp osno osnr osoo osor osos osro ossb osso ossu ostr osts osun otbs oto- oton otoo otor otos otpp otro otrs otso otsu otto otts ottu otur otus oubs oun- our- ourn ouro ours ourt oust out- outb outo outs ouu- pbrs pbsp pnon pnot pnpo pnpp pnro pntr pnup pobo pobs pono ponp pons pont poon poop poor poos poot pop- popo popp pops popt porb porn poro porr pors port posb posn poso poss post poto pots pott potu poun poup pour pous pout ppos pppn pppo pppp ppps ppru ppss pptn ppts pptt ppur prbs prnp pro- prob pron proo prop pros prot prou prps prrs prso prss prtp prtr prus prut pruu psbr psbt psnr pson psos psou pspp pspr psps psrp psso psst psts pstu ptop pubs pubu puno puns punt punu pups pupu pur- purb puro purp purr purs puru puss pust put- puto puts putt putu rbbb rbbr rbbs rbsp rbss rbst rnbr rnnt rnot rnsp rntp rnut rob- robb robo robs robt robu rono rons ront roob roon roop roor roos root ropo rops roro rort roru roso rosp ross rost rotn roto rotr rots rott roub roun roup rous rout rpob