-er -ji bbb bbe bbf bbg bbi bbn bbo bbr bbs be- beb bee bef beg bei ben beo ber bes bfb bfe bff bfg bfi bfj bfn bfo bfr bfs bgb bge bgf bgg bgi bgn bgo bgr bgs bi- bib bie bif big bii bij bin bio bir bis bjf bjg bji bjj bjn bjr bjs bnb bne bnf bng bni bnj bnn bno bnr bns bob boe bof bog boi boj bon boo bor bos brb bre brf brg bri brj brn bro brr brs bsb bse bsf bsg bsi bsj bsn bso bsr bss ebb ebe ebf ebg ebi ebj ebn ebo ebr ebs eeb eee eef eeg een eeo eer ees ef- efb efe eff efg efi efo efr efs egb ege egf egg egi egn ego egr egs eib eie eif eig eii eij ein eio eir eis ejf eji ejo en- enb ene enf eng eni enn eno enr ens eo- eob eoe eof eog eoi eon eoo eor eos erb ere erf erg eri ern ero err ers es- esb ese esf esg esi esn eso esr ess fbb fbe fbf fbg fbi fbn fbo fbr fbs feb fee fef feg fei fen feo fer fes ffe fff ffg ffi ffn ffo ffr ffs fgb fge fgf fgg fgi fgn fgr fgs fib fie fif fig fii fij fin fir fis fjb fjg fji fjs fnb fne fnf fng fni fnj fnn fnr fns fob foe fof fog foi fon foo for fos frb fre frf frg fri frj frn fro frr frs fsb fse fsf fsg fsi fsj fsn fso fsr fss gbe gbf gbg gbi gbj gbn gbo gbr gbs ge- geb gee gef geg gei gen geo ger ges gfb gfe gff gfi gfo gfr gfs ggb ggg ggi ggj ggn ggo ggr ggs gib gie gif gig gii gij gin gio gir gis gje gjg gjr gnb gne gnf gni gnn gno gnr gns gob goe gof gog goi gon goo gor gos grb gre grf grg gri grj grn gro grr grs gsb gse gsf gsg gsi gsj gsn gso gsr gss i-f ibb ibe ibf ibg ibi ibj ibn ibo ibr ibs ie- iee ief ieg iei iej ien ier ies ifb ife iff ifg ifi ifn ifo ifr ifs igb ige igf igg igi ign igo igr igs iib iie iif iii iij iin iio iir iis ijb ije ijf ijg iji ijn ijo ijs in- inb ine inf ing ini inj inn ino inr ins io- iob ioe iof iog ioi ioj ion ioo ior ios ir- irb ire irf irg iri irj irn iro irr irs is- isb ise isf isg isi isj isn iso isr iss j-i jbf jbg jbi jbj jbo jbr jbs jeb jee jef jeg jei jej jen jeo jer jes jfb jfe jff jfg jfi jfj jfo jfr jfs jgb jge jgi jgn jgo jgr jgs jib jie jif jig jii jij jin jio jir jis jjb jjf jjg jjj jjr jjs jne jnf jng jnj jnn jno jnr jns job joe jof jog joi joj jon joo jor jos jrb jrf jrg jri jrn jro jrr jrs jsb jse jsf jsg jsi jsj jsn jso jsr jss n-i nbb nbe nbf nbg nbi nbn nbo nbr nbs ne- neb nee nef neg nei nej nen neo ner nes nfb nfe nff nfi nfn nfo nfr nfs ngb nge ngf ngg ngi ngj ngn ngo ngs nib nie nif nig nii nin nio nir nis nje njf njn njs nnb nne nnf nng nni nnn nno nns no- nob noe nof nog noi noj non noo nor nos nrb nre nrf nrg nri nrj nrn nro nrr nrs nsb nse nsf nsg nsi nsn nso nsr nss o-i ob- obb obe obf obg obi obj obn obo obr obs oeb oee oef oeg oei oen oeo oer oes of- ofb ofe off ofg ofi ofn ofo ofr ofs oge ogf ogg ogi ogn ogo ogs oib oie oif oii oin oio oir ois ojb oje oji ojo ojs on- onb one onf ong oni onj onn ono onr ons oo- oob oof oog ooi oon ooo oor oos or- orb ore orf org ori orn oro orr ors os- osb ose osf osg osi osj osn oso osr oss rbb rbe rbf rbg rbi rbn rbo rbr rbs re- reb ree ref reg rei ren reo rer res rfb rfe rff rfg rfi rfj rfn rfo rfr rfs rgb rge rgf rgg rgi rgn rgo rgr rgs rib rie rif rig rii rin rio rir ris rjf rjg rjr rnb rng rni rnn rno rnr rns rob roe rof rog roi roj ron roo ror ros rrb rrf rrg rri rrn rrr rrs rsb rse rsf rsg rsi rsj rsn rso rsr rss sbb sbe sbf sbg sbi sbj sbn sbo sbr sbs se- seb see sef seg sei sej sen seo ser ses sfb sfe sff sfg sfi sfj sfn sfo sfr sfs sgb sge sgf sgg sgi sgn sgo sgr sgs sib sie sif sig sii sij sin sio sir sis sjb sje sjf sji sjj sjr sjs snb sne snf sng sni snj snn sno snr sns sob soe sof sog soi soj son soo sor sos sr- srb sre srf srg sri srj srn sro srr srs ss- ssb sse ssf ssg ssi ssj ssn sso ssr sss