b-p bbb bbi bbn bbo bbp bbr bbt bi- bib bii bin bio bip bir bit bnb bni bnn bno bnp bnr bnt bob boi bon boo bop bor bot bpb bpi bpn bpo bpp bpr bpt brb bri brn bro brp brr brt btb bti btn bto btp btr btt ibb ibi ibn ibo ibp ibr ibt iib iii iin iio iip iir iit in- inb ini inn ino inp inr int io- iob ioi ion ioo iop ior iot ipb ipi ipn ipo ipp ipr ipt ir- irb iri irn iro irp irr irt itb iti itn ito itp itt n-i nbb nbi nbn nbo nbp nbr nbt nib nii nin nio nip nir nit nnb nni nnn nno nnp nnt no- nob noi non noo nop nor not npb npi npn npo npp npr npt nrb nri nrn nro nrp nrr nrt ntb nti ntn nto ntp ntr ntt o-i ob- obb obi obn obo obp obr obt oib oii oin oio oip oir oit on- onb oni onn ono onp onr ont oo- oob ooi oon ooo oop oor oot op- opb opi opn opo opp opr opt or- orb ori orn oro orp orr ort ot- otb oti otn oto otp otr ott p-p pbb pbi pbn pbo pbp pbr pbt pib pii pin pio pip pir pit pn- pnb pni pnn pno pnp pnr pnt pob poi pon poo pop por pot ppb ppi ppn ppo ppp ppr ppt prb pri prn pro prp prr prt pt- ptb pti ptn pto ptp ptr ptt rbb rbi rbn rbo rbp rbr rbt rib rii rin rio rip rir rit rnb rni rnn rno rnp rnr rnt rob roi ron roo rop ror rot rpb rpi rpn rpo rpp rpr rpt rrb rri rrn rrp rrr rrt rtb rti rtn rto rtp rtr rtt tbb tbi tbn tbo tbp tbr tbt tib tii tin tio tip tir tit tnb tni tnn tno tnp tnr tnt to- tob toi ton too top tor tot tpb tpi tpn tpo tpp tpr tpt trb tri trn tro trp trr trt ttb tti ttn tto ttp ttr ttt

bbbb bbin bbpr bibb bibi bibo biin bin- bini binn bino bint bio- bioi bion biot bipp birb biri birn biro birr birt bito bitt bnib bnin bnor bnpp bnrr bobb bobi bobo boi- boii boin boit boni bonn bono bont boob boon boop boor boot bopp bor- bori born boro borr bort botb boti botn boto bott bpot bpti brin brio brit brno brob bron broo bror brot brrr btbp btob btor btrt bttb i-no ibon ibot ibri ibro ibtb iiii iiio iiit iino iioi iioo iiop iitr iitt inbo init inni inno innr ino- inoi inon inor inot inp- inpi inpp inpt inri inro inti intn into intp intr iobi ioii ioio ioit ioni ionn iono iooi iooo iori ioto ipin ipop ippo ippr ipri ipto irbp iri- irin irio irip irob iron irop irri irti irtp itin itno itoi iton itoo itor itri itto n-ii nbbo nbpp nbti nibi nibo niip niir niit nini nino nion nioo nipr nipt niro nirt nitb niti nito nitr nnit nnnn nnot nnpi nnpr nntn nobi nobo noib noin noio noir noit non- noni nonn nono nont noo- noob noon nooo noop noor noot nor- norb nori norn noro norr nort not- noti noto nott npin npri nprt nptn nron nrpn ntop ntto nttr obbo obin obit oboi obon obor obot obri obro oiii oint oion oirt oiti onir onit onni onno onon onor onpt ont- onti onto oobi oont oooo oort ootb ootp opii opin opio opit opo- opon opor oppi oppo opti optn opto orbb orbi orbo ori- orin orio orit orni orno oro- oron oror orot orpi orri orro orto otin otit oto- oton otoo otor otpp otro otti otto pibb pibi piip pini pinn pino pinp pint piob pion piot pipi pipo pipp piri pirn piro pirr piti pito pitr pitt pnin pnon pnot pnpo pnpp pnro pntr pobo poin poio poni pono ponp pont poon poop poor poot pop- popi popo popp popt porb pori porn poro porr port poti poto pott ppib pppn pppo pppp pptn pptt pri- prii prin prnp pro- prob pron proo prop prot prri prti prtp prtr ptop rbbb rbbr rib- ribo riin rinn rino rion riot ripi ripp ripr ript riri riti rito ritt rnbr rnin rnnt rnot rntp rob- robb robi robo robt roin roio roir roit roni rono ront roob rooi roon roop roor root ropo rori roro rort roti rotn roto rotr rott rpii rpob rpon rppn rptn rrrr rttp tbit tbrb tbtp tibi tiit tini tinn tino tint tion tiop tip- tipi tipo tipp tipt tirb tiri tiro tirr titi tito titp titt tobi tobo tobt toit tonb toni tonn tono toon toor toot top- topi topo topp topt tori torn toro torp torr tort toti toto totr tott tpir tpon tppp tppr tptp tptr tri- trib trin trio trip trit trno troi tron troo trop trot trpn trpp trtr ttbb tton ttop tttt

bibbo bibin bibio bibri binit binot biont bipib bipin birin birni biron bitit biton bitop bitti bitto bnito bo-bo bobbi bobin bobr bobri boiro boito bonin bonio bonon booit boont boorn boort bopin bopit borbo borin borio born- borno bornt boro- boron boroo borot borro botin boton botro botti brini brinn brint brion briot brito britt brobo broin broni bronn bront broon broto brrrr btr-t btron i-bon i-bot i-pin ibibo iborn ibtin iiiii iitti inbin inini inio inio- inion inipi innit innti inoor inorb inori inrio intio intoo intop intpr intro iobit iono- ioooi ioooo iorio iotit iotti ipini ipiti ipopt iport ippon irbit irinn irion irobo irono irori irpin irrit irton itbit ition itnot itobi itpro itrip itron itton ittoo ittti n-p-n nibbi niibi niiip ninib ninon ninpo ninti niono niopo nioro niort nipin nipit nippo nipri nipro nirit nirop nitin niton nitor nitot nitr- nitro nitti nitto nnooo no-ip no-no no-op nobin