b-p bbb bbi bbn bbo bbp bbr bbs bi- bib bii bin bio bip bir bis bnb bni bnn bno bnp bnr bns bob boi bon boo bop bor bos bpb bpi bpn bpo bpp bpr bps brb bri brn bro brp brr brs bsb bsi bsn bso bsp bsr bss ibb ibi ibn ibo ibp ibr ibs iib iii iin iio iip iir iis in- inb ini inn ino inp inr ins io- iob ioi ion ioo iop ior ios ipb ipi ipn ipo ipp ipr ips ir- irb iri irn iro irp irr irs is- isb isi isn iso isp isr iss n-i nbb nbi nbn nbo nbp nbr nbs nib nii nin nio nip nir nis nnb nni nnn nno nnp nns no- nob noi non noo nop nor nos npb npi npn npo npp npr nps nrb nri nrn nro nrp nrr nrs nsb nsi nsn nso nsp nsr nss o-i ob- obb obi obn obo obp obr obs oib oii oin oio oip oir ois on- onb oni onn ono onp onr ons oo- oob ooi oon ooo oop oor oos op- opb opi opn opo opp opr ops or- orb ori orn oro orp orr ors os- osb osi osn oso osp osr oss p-p pbb pbi pbn pbo pbp pbr pbs pib pii pin pio pip pir pis pn- pnb pni pnn pno pnp pnr pns pob poi pon poo pop por pos ppb ppi ppn ppo ppp ppr pps prb pri prn pro prp prr prs ps- psb psi psn pso psp psr pss rbb rbi rbn rbo rbp rbr rbs rib rii rin rio rip rir ris rnb rni rnn rno rnp rnr rns rob roi ron roo rop ror ros rpb rpi rpn rpo rpp rpr rps rrb rri rrn rrp rrr rrs rsb rsi rsn rso rsp rsr rss sbb sbi sbn sbo sbp sbr sbs sib sii sin sio sip sir sis snb sni snn sno snp snr sns sob soi son soo sop sor sos spb spi spn spo spp spr sps sr- srb sri srn sro srp srr srs ss- ssb ssi ssn sso ssp ssr sss

bbbb bbbs bbin bbpr bibb bibi bibo bibs biin biis bin- bini binn bino bins bio- bioi bion bios bipp bips birb biri birn biro birr birs bis- biso bisp biss bnib bnin bnor bnpp bnrr bnss bobb bobi bobo bobs boi- boii boin bois boni bonn bono bons boob boon boop boor boos bopp bops bor- bori born boro borr bors bosi bosn boso boss brin brio bris brno brns brob bron broo bror bros brrr brrs brsb brsr bsin bsns bson bsos bspp bspr i-no ibis ibns ibon ibos ibri ibro ibsn ibss iiii iiio iiis iino iioi iioo iiop iios iirs iisi iisp iisr inbo inis inni inno innr inns ino- inoi inon inor inos inp- inpi inpp inri inro inrs inso insp inss iobi ioii ioio ioni ionn iono ions iooi iooo ioos iops iori iors ioso ipin ipop ipos ippo ippr ipri ipsi ipso ipsp ipss irbp iri- irin irio irip iris irob iron irop irps irri irrs irsp isbn isin isis isno iso- ison isop isor isos ispr isps isri isrp issi isso issp issr isss n-ii nbbo nbpp nbps nbsp nibi nibo nibs niip niir nini nino nins nion nioo nios nipr nips niro nirs nisi niso nisp niss nnnn nnos nnpi nnpr nnss nobi nobo nobs noib noin noio noir nois non- noni nonn nono nons noo- noob noon nooo noop noor noos nops nor- norb nori norn noro norr nors nos- noss npin npri npss nron nrpn nrps nrsp nsbo nsin nsis nsnr nsos nspi nsps nssb nsso nssp nssr nsss obbo obin obis oboi obon obor obos obri obro obsn obsr obss oiii oins oion oios onir onis onni onno onon onor onos onso oobi oons oooo ooos oops oosi opii opin opio opis opo- opon opor opos oppi oppo opps opsi orbb orbi orbo orbs ori- orin orio oris orni orno orns oro- oron oror oros orpi orps orri orro orrs orsi orso osbp osii osin osip osis osno osnr osoi osoo osor osos osro ossb ossi osso pbrs pbsp pibb pibi piip pini pinn pino pinp pins piob pion pipi pipo pipp pips piri pirn piro pirr pirs pisi piso piss pnin pnon pnpo pnpp pnro pobo pobs poin poio pois poni pono ponp pons poon poop poor poos pop- popi popo popp pops porb pori porn poro porr pors posb posi posn poso poss ppib ppos pppn pppo pppp ppps ppss prbs pri- prii prin pris prnp pro- prob pron proo prop pros prps prri prrs prsi prso prss psbr psip psis psni psnr psoi pson psos pspi pspp pspr psps psrp psso rbbb rbbr rbbs rbis rbsp rbss rib- ribo ribs riin riis rinn rino rion rios ripi ripp ripr rips riri rirs risi riso risp riss rnbr rnin rnsp rob- robb robi robo robs roin roio roir rois roni rono rons roob rooi roon roop roor roos ropo rops rori roro rosi roso rosp ross rpii rpob rpon rpos rppn rpps rrrr rrsp rsbi rsis rsnn rsno rsnr rsos rspb rspo rsps s-ib s-ii s-os sbbs sbor sbsi sbsp sibi sibo sibs sini sinn sino sinp sins sion siop sior sios sipi sipo sipp sips siri siro sirp sirr sirs sisi siss snib snip snir snns snob snoo snop snor snos snpo snpp snrs sobo sobp sobr sobs soin soir sois son- soni sono sons soon soop soor soos sopi sopo sopp sops sorb sori sorn soro sorr sors sosi soso soss spib spin spio spip spir spis spns spon spoo spop spor spos spps spri spro sprs spso spsp spss srib sris srni srnn srno sros srps srsp ssbn ssbr ssin ssis ssns ssop sspo ssps ssri ssrs sssb sssi ssss

bibbo bibbs bibin bibio bibis bibos bibri binns binos bions bioss bipib bipin birin birni birns biron biros birrs bisin bison bispo