-er bbb bbe bbg bbi bbk bbn bbo bbr bbs bbt be- beb bee beg bei bek ben beo ber bes bet bgb bge bgg bgi bgk bgn bgo bgr bgs bgt bi- bib bie big bii bik bin bio bir bis bit bkb bke bkg bkk bkn bko bkr bks bkt bnb bne bng bni bnk bnn bno bnr bns bnt bob boe bog boi bok bon boo bor bos bot brb bre brg bri brk brn bro brr brs brt bsb bse bsg bsi bsk bsn bso bsr bss bst btb bte btg bti btk btn bto btr bts btt ebb ebe ebg ebi ebk ebn ebo ebr ebs ebt eeb eee eeg eek een eeo eer ees eet egb ege egg egi egn ego egr egs egt eib eie eig eii eik ein eio eir eis eit ekb eke ekg eki eko ekr eks ekt en- enb ene eng eni enk enn eno enr ens ent eo- eob eoe eog eoi eok eon eoo eor eos eot erb ere erg eri erk ern ero err ers ert es- esb ese esg esi esk esn eso esr ess est etb ete etg eti etk etn eto etr ets ett gbe gbg gbi gbk gbn gbo gbr gbs gbt ge- geb gee geg gei gek gen geo ger ges get ggb ggg ggi ggn ggo ggr ggs ggt gib gie gig gii gik gin gio gir gis git gkb gkn gko gks gkt gnb gne gni gnn gno gnr gns gnt gob goe gog goi gok gon goo gor gos got grb gre grg gri grk grn gro grr grs grt gsb gse gsg gsi gsk gsn gso gsr gss gst gtb gte gtg gti gtk gtn gto gtr gts gtt ibb ibe ibg ibi ibk ibn ibo ibr ibs ibt ie- iee ieg iei iek ien ier ies iet igb ige igg igi igk ign igo igr igs igt iib iie iii iin iio iir iis iit ikb ike iki ikk iko ikr iks ikt in- inb ine ing ini ink inn ino inr ins int io- iob ioe iog ioi ion ioo ior ios iot ir- irb ire irg iri irk irn iro irr irs irt is- isb ise isg isi isk isn iso isr iss ist itb ite itg iti itk itn ito its itt k-t kbb kbe kbi kbk kbn kbo kbr kbs ke- keb kee keg kei kek ken keo ker kes ket kgb kgi kgo kgs kib kie kig kii kik kin kio kir kis kit kkb kke kki kkk kkn kkr kks kkt kn- kne kng kni knk knn kno knr knt kob koe kog koi kok kon koo kor kos kot krg kri krk krn kro krr krs krt ksb kse ksg ksi ksk ksn kso ksr kss kst ktb kte ktg ktk ktn kto ktr kts ktt n-i nbb nbe nbg nbi nbk nbn nbo nbr nbs nbt ne- neb nee neg nei nek nen neo ner nes net ngb nge ngg ngi ngk ngn ngo ngs ngt nib nie nig nii nik nin nio nir nis nit nke nki nkk nkn nko nkr nks nkt nnb nne nng nni nnk nnn nno nns nnt no- nob noe nog noi nok non noo nor nos not nrb nre nrg nri nrk nrn nro nrr nrs nrt nsb nse nsg nsi nsk nsn nso nsr nss nst ntb nte ntg nti ntk ntn nto ntr nts ntt o-i ob- obb obe obg obi obk obn obo obr obs obt oeb oee oeg oei oen oeo oer oes oet oge ogg ogi ogn ogo ogs ogt oib oie oii oik oin oio oir ois oit okb oke okg oki okk oko okr oks on- onb one ong oni onk onn ono onr ons ont oo- oob oog ooi ook oon ooo oor oos oot or- orb ore org ori ork orn oro orr ors ort os- osb ose osg osi osk osn oso osr oss ost ot- otb ote otg oti otk otn oto otr ots ott rbb rbe rbg rbi rbk rbn rbo rbr rbs rbt re- reb ree reg rei rek ren reo rer res ret rgb rge rgg rgi rgk rgn rgo rgr rgs rgt rib rie rig rii rik rin rio rir ris rit rkb rke rkg rkk rko rks rkt rnb rng rni rnn rno rnr rns rnt rob roe rog roi rok ron roo ror ros rot rrb rrg rri rrk rrn rrr rrs rrt rsb rse rsg rsi rsk rsn rso rsr rss rst rtb rte rtg rti rtk rtn rto rtr rts rtt sbb sbe sbg sbi sbk sbn sbo sbr sbs sbt se- seb see seg sei sek sen seo ser ses set sgb sge sgg sgi sgk sgn sgo sgr sgs sgt sib sie sig sii sik sin sio sir sis sit sk- skb ske skg ski skk sko skr sks skt snb sne sng sni snk snn sno snr sns snt sob soe sog soi sok son soo sor sos sot sr- srb sre srg sri srk srn sro srr srs srt ss- ssb sse ssg ssi ssk ssn sso ssr sss sst stb ste stg sti stk stn sto str sts stt tbb tbe tbg tbi tbk tbn tbo tbr tbs tbt te- teb tee teg tei tek ten teo ter tes tet tgb tge tgg tgi tgk tgn tgo tgr tgs tgt tib tie tig tii tik tin tio tir tis tit tkb tke tkg tkk tko tkr tks tkt tnb tne tng tni tnk tnn tno tnr tns tnt to- tob toe tog toi tok ton too tor tos tot trb tre trg tri trk trn tro trr trs trt tsb tse tsg tsi tsk tsn tso tsr tss tst ttb tte ttg tti ttk ttn tto ttr tts ttt