bbb bbf bbg bbi bbn bbo bbr bbs bbt bfb bff bfg bfi bfn bfo bfr bfs bft bgb bgf bgg bgi bgn bgo bgr bgs bgt bi- bib bif big bii bin bio bir bis bit bnb bnf bng bni bnn bno bnr bns bnt bob bof bog boi bon boo bor bos bot brb brf brg bri brn bro brr brs brt bsb bsf bsg bsi bsn bso bsr bss bst btb btf btg bti btn bto btr bts btt fbb fbf fbg fbi fbn fbo fbr fbs fbt fff ffg ffi ffn ffo ffr ffs fft fgb fgf fgg fgi fgn fgr fgs fgt fib fif fig fii fin fir fis fit fnb fnf fng fni fnn fnr fns fnt fob fof fog foi fon foo for fos fot frb frf frg fri frn fro frr frs frt fsb fsf fsg fsi fsn fso fsr fss fst ftb ftf ftg fti ftn fto ftr fts ftt gbf gbg gbi gbn gbo gbr gbs gbt gfb gff gfi gfo gfr gfs gft ggb ggg ggi ggn ggo ggr ggs ggt gib gif gig gii gin gio gir gis git gnb gnf gni gnn gno gnr gns gnt gob gof gog goi gon goo gor gos got grb grf grg gri grn gro grr grs grt gsb gsf gsg gsi gsn gso gsr gss gst gtb gtf gtg gti gtn gto gtr gts gtt i-f ibb ibf ibg ibi ibn ibo ibr ibs ibt ifb iff ifg ifi ifn ifo ifr ifs ift igb igf igg igi ign igo igr igs igt iib iif iii iin iio iir iis iit in- inb inf ing ini inn ino inr ins int io- iob iof iog ioi ion ioo ior ios iot ir- irb irf irg iri irn iro irr irs irt is- isb isf isg isi isn iso isr iss ist itb itf itg iti itn ito its itt n-i nbb nbf nbg nbi nbn nbo nbr nbs nbt nfb nff nfi nfn nfo nfr nfs nft ngb ngf ngg ngi ngn ngo ngs ngt nib nif nig nii nin nio nir nis nit nnb nnf nng nni nnn nno nns nnt no- nob nof nog noi non noo nor nos not nrb nrf nrg nri nrn nro nrr nrs nrt nsb nsf nsg nsi nsn nso nsr nss nst ntb ntf ntg nti ntn nto ntr nts ntt o-i ob- obb obf obg obi obn obo obr obs obt of- ofb off ofg ofi ofn ofo ofr ofs oft ogf ogg ogi ogn ogo ogs ogt oib oif oii oin oio oir ois oit on- onb onf ong oni onn ono onr ons ont oo- oob oof oog ooi oon ooo oor oos oot or- orb orf org ori orn oro orr ors ort os- osb osf osg osi osn oso osr oss ost ot- otb otf otg oti otn oto otr ots ott rbb rbf rbg rbi rbn rbo rbr rbs rbt rfb rff rfg rfi rfn rfo rfr rfs rft rgb rgf rgg rgi rgn rgo rgr rgs rgt rib rif rig rii rin rio rir ris rit rnb rng rni rnn rno rnr rns rnt rob rof rog roi ron roo ror ros rot rrb rrf rrg rri rrn rrr rrs rrt rsb rsf rsg rsi rsn rso rsr rss rst rtb rtf rtg rti rtn rto rtr rts rtt sbb sbf sbg sbi sbn sbo sbr sbs sbt sfb sff sfg sfi sfn sfo sfr sfs sft sgb sgf sgg sgi sgn sgo sgr sgs sgt sib sif sig sii sin sio sir sis sit snb snf sng sni snn sno snr sns snt sob sof sog soi son soo sor sos sot sr- srb srf srg sri srn sro srr srs srt ss- ssb ssf ssg ssi ssn sso ssr sss sst stb stf stg sti stn sto str sts stt tbb tbf tbg tbi tbn tbo tbr tbs tbt tfb tff tfg tfi tfn tfo tfr tfs tft tgb tgf tgg tgi tgn tgo tgr tgs tgt tib tif tig tii tin tio tir tis tit tnb tnf tng tni tnn tno tnr tns tnt to- tob tof tog toi ton too tor tos tot trb trf trg tri trn tro trr trs trt tsb tsf tsg tsi tsn tso tsr tss tst ttb ttf ttg tti ttn tto ttr tts ttt