-er bbb bbe bbn bbo bbr bbs be- beb bee ben beo ber bes bjj bjn bjr bjs bnb bne bnj bnn bno bnr bns bob boe boj bon boo bor bos brb bre brj brn bro brr brs bsb bse bsj bsn bso bsr bss ebb ebe ebj ebn ebo ebr ebs eeb eee een eeo eer ees ejo en- enb ene enn eno enr ens eo- eob eoe eon eoo eor eos erb ere ern ero err ers es- esb ese esn eso esr ess jbj jbo jbr jbs jeb jee jej jen jeo jer jes jjb jjj jjr jjs jne jnj jnn jno jnr jns job joe joj jon joo jor jos jrb jrn jro jrr jrs jsb jse jsj jsn jso jsr jss nbb nbe nbn nbo nbr nbs ne- neb nee nej nen neo ner nes nje njn njs nnb nne nnn nno nns no- nob noe noj non noo nor nos nrb nre nrj nrn nro nrr nrs nsb nse nsn nso nsr nss ob- obb obe obj obn obo obr obs oeb oee oen oeo oer oes ojb oje ojo ojs on- onb one onj onn ono onr ons oo- oob oon ooo oor oos or- orb ore orn oro orr ors os- osb ose osj osn oso osr oss rbb rbe rbn rbo rbr rbs re- reb ree ren reo rer res rjr rnb rnn rno rnr rns rob roe roj ron roo ror ros rrb rrn rrr rrs rsb rse rsj rsn rso rsr rss sbb sbe sbj sbn sbo sbr sbs se- seb see sej sen seo ser ses sjb sje sjj sjr sjs snb sne snj snn sno snr sns sob soe soj son soo sor sos sr- srb sre srj srn sro srr srs ss- ssb sse ssj ssn sso ssr sss