-er bbb bbe bbg bbi bbn bbo bbr bbs bbt be- beb bee beg bei ben beo ber bes bet bgb bge bgg bgi bgn bgo bgr bgs bgt bi- bib bie big bii bin bio bir bis bit bnb bne bng bni bnn bno bnr bns bnt bob boe bog boi bon boo bor bos bot brb bre brg bri brn bro brr brs brt bsb bse bsg bsi bsn bso bsr bss bst btb bte btg bti btn bto btr bts btt ebb ebe ebg ebi ebn ebo ebr ebs ebt eeb eee eeg een eeo eer ees eet egb ege egg egi egn ego egr egs egt eib eie eig eii ein eio eir eis eit en- enb ene eng eni enn eno enr ens ent eo- eob eoe eog eoi eon eoo eor eos eot erb ere erg eri ern ero err ers ert es- esb ese esg esi esn eso esr ess est etb ete etg eti etn eto etr ets ett gbe gbg gbi gbn gbo gbr gbs gbt ge- geb gee geg gei gen geo ger ges get ggb ggg ggi ggn ggo ggr ggs ggt gib gie gig gii gin gio gir gis git gnb gne gni gnn gno gnr gns gnt gob goe gog goi gon goo gor gos got grb gre grg gri grn gro grr grs grt gsb gse gsg gsi gsn gso gsr gss gst gtb gte gtg gti gtn gto gtr gts gtt ibb ibe ibg ibi ibn ibo ibr ibs ibt ie- iee ieg iei ien ier ies iet igb ige igg igi ign igo igr igs igt iib iie iii iin iio iir iis iit in- inb ine ing ini inn ino inr ins int io- iob ioe iog ioi ion ioo ior ios iot ir- irb ire irg iri irn iro irr irs irt is- isb ise isg isi isn iso isr iss ist itb ite itg iti itn ito its itt n-i nbb nbe nbg nbi nbn nbo nbr nbs nbt ne- neb nee neg nei nen neo ner nes net ngb nge ngg ngi ngn ngo ngs ngt nib nie nig nii nin nio nir nis nit nnb nne nng nni nnn nno nns nnt no- nob noe nog noi non noo nor nos not nrb nre nrg nri nrn nro nrr nrs nrt nsb nse nsg nsi nsn nso nsr nss nst ntb nte ntg nti ntn nto ntr nts ntt o-i ob- obb obe obg obi obn obo obr obs obt oeb oee oeg oei oen oeo oer oes oet oge ogg ogi ogn ogo ogs ogt oib oie oii oin oio oir ois oit on- onb one ong oni onn ono onr ons ont oo- oob oog ooi oon ooo oor oos oot or- orb ore org ori orn oro orr ors ort os- osb ose osg osi osn oso osr oss ost ot- otb ote otg oti otn oto otr ots ott rbb rbe rbg rbi rbn rbo rbr rbs rbt re- reb ree reg rei ren reo rer res ret rgb rge rgg rgi rgn rgo rgr rgs rgt rib rie rig rii rin rio rir ris rit rnb rng rni rnn rno rnr rns rnt rob roe rog roi ron roo ror ros rot rrb rrg rri rrn rrr rrs rrt rsb rse rsg rsi rsn rso rsr rss rst rtb rte rtg rti rtn rto rtr rts rtt sbb sbe sbg sbi sbn sbo sbr sbs sbt se- seb see seg sei sen seo ser ses set sgb sge sgg sgi sgn sgo sgr sgs sgt sib sie sig sii sin sio sir sis sit snb sne sng sni snn sno snr sns snt sob soe sog soi son soo sor sos sot sr- srb sre srg sri srn sro srr srs srt ss- ssb sse ssg ssi ssn sso ssr sss sst stb ste stg sti stn sto str sts stt tbb tbe tbg tbi tbn tbo tbr tbs tbt te- teb tee teg tei ten teo ter tes tet tgb tge tgg tgi tgn tgo tgr tgs tgt tib tie tig tii tin tio tir tis tit tnb tne tng tni tnn tno tnr tns tnt to- tob toe tog toi ton too tor tos tot trb tre trg tri trn tro trr trs trt tsb tse tsg tsi tsn tso tsr tss tst ttb tte ttg tti ttn tto ttr tts ttt