b-p bbb bbg bbi bbk bbn bbo bbp bbr bbs bbx bgb bgg bgi bgk bgn bgo bgp bgr bgs bgx bi- bib big bii bik bin bio bip bir bis bix bkb bkg bkk bkn bko bkp bkr bks bkx bnb bng bni bnk bnn bno bnp bnr bns bnx bob bog boi bok bon boo bop bor bos box bpb bpg bpi bpn bpo bpp bpr bps bpx brb brg bri brk brn bro brp brr brs brx bsb bsg bsi bsk bsn bso bsp bsr bss bsx bxb bxi bxn bxo bxx g-p gbg gbi gbk gbn gbo gbp gbr gbs gbx ggb ggg ggi ggn ggo ggp ggr ggs gib gig gii gik gin gio gip gir gis gkb gkn gko gkp gks gnb gni gnn gno gnp gnr gns gob gog goi gok gon goo gop gor gos gox gpb gpg gpi gpk gpn gpo gpp gpr gps gpx grb grg gri grk grn gro grp grr grs grx gsb gsg gsi gsk gsn gso gsp gsr gss gsx gxp gxs ibb ibg ibi ibk ibn ibo ibp ibr ibs ibx igb igg igi igk ign igo igp igr igs iib iii iin iio iip iir iis iix ikb iki ikk iko ikr iks ikx in- inb ing ini ink inn ino inp inr ins inx io- iob iog ioi ion ioo iop ior ios ipb ipg ipi ipn ipo ipp ipr ips ipx ir- irb irg iri irk irn iro irp irr irs irx is- isb isg isi isk isn iso isp isr iss ixi ixn kbb kbi kbk kbn kbo kbp kbr kbs kbx kgb kgi kgo kgp kgs kgx kib kig kii kik kin kio kip kir kis kix kkb kki kkk kkn kkp kkr kks kn- kng kni knk knn kno knp knr knx kob kog koi kok kon koo kop kor kos kpi kpk kpn kpo kpp kpr kps krg kri krk krn kro krp krr krs ksb ksg ksi ksk ksn kso ksp ksr kss kxo n-i nbb nbg nbi nbk nbn nbo nbp nbr nbs nbx ngb ngg ngi ngk ngn ngo ngp ngs nib nig nii nik nin nio nip nir nis nix nki nkk nkn nko nkp nkr nks nnb nng nni nnk nnn nno nnp nns no- nob nog noi nok non noo nop nor nos nox npb npg npi npn npo npp npr nps nrb nrg nri nrk nrn nro nrp nrr nrs nrx nsb nsg nsi nsk nsn nso nsp nsr nss nsx o-i ob- obb obg obi obk obn obo obp obr obs obx ogg ogi ogn ogo ogp ogs ogx oib oii oik oin oio oip oir ois okb okg oki okk oko okp okr oks on- onb ong oni onk onn ono onp onr ons onx oo- oob oog ooi ook oon ooo oop oor oos oox op- opb opg opi opk opn opo opp opr ops opx or- orb org ori ork orn oro orp orr ors orx os- osb osg osi osk osn oso osp osr oss osx ox- oxb oxi oxn oxo oxx p-p pbb pbg pbi pbk pbn pbo pbp pbr pbs pbx pgb pgg pgi pgk pgn pgo pgp pgr pgs pib pig pii pik pin pio pip pir pis pix pkb pkg pki pkn pko pkp pkr pks pn- pnb png pni pnk pnn pno pnp pnr pns pnx pob pog poi pok pon poo pop por pos pox ppb ppg ppi ppk ppn ppo ppp ppr pps ppx prb prg pri prk prn pro prp prr prs prx ps- psb psg psi psk psn pso psp psr pss psx pxg pxk pxr pxs rbb rbg rbi rbk rbn rbo rbp rbr rbs rbx rgb rgg rgi rgk rgn rgo rgp rgr rgs rgx rib rig rii rik rin rio rip rir ris rix rkb rkg rkk rko rkp rks rnb rng rni rnn rno rnp rnr rns rob rog roi rok ron roo rop ror ros rox rpb rpg rpi rpk rpn rpo rpp rpr rps rpx rrb rrg rri rrk rrn rrp rrr rrs rsb rsg rsi rsk rsn rso rsp rsr rss rsx rxp rxr rxs sbb sbg sbi sbk sbn sbo sbp sbr sbs sbx sgb sgg sgi sgk sgn sgo sgp sgr sgs sgx sib sig sii sik sin sio sip sir sis six sk- skb skg ski skk sko skp skr sks skx snb sng sni snk snn sno snp snr sns sob sog soi sok son soo sop sor sos sox spb spg spi spk spn spo spp spr sps spx sr- srb srg sri srk srn sro srp srr srs srx ss- ssb ssg ssi ssk ssn sso ssp ssr sss ssx sxi sxn sxs xbr xbx xgi xgp xii xin xio xis xix xkb xks xnk xno xns xog xoi xok xon xoo xop xor xos xox xpb xpg xpn xpo xpp xps xrx xsb xsi xsp xss xxi xxo xxp xxx