-er -ji bbb bbe bbi bbo bbr bbs be- beb bee bei beo ber bes bi- bib bie bii bij bio bir bis bji bjj bjr bjs bob boe boi boj boo bor bos brb bre bri brj bro brr brs bsb bse bsi bsj bso bsr bss ebb ebe ebi ebj ebo ebr ebs eeb eee eeo eer ees eib eie eii eij eio eir eis eji ejo eo- eob eoe eoi eoo eor eos erb ere eri ero err ers es- esb ese esi eso esr ess ibb ibe ibi ibj ibo ibr ibs ie- iee iei iej ier ies iib iie iii iij iio iir iis ijb ije iji ijo ijs io- iob ioe ioi ioj ioo ior ios ir- irb ire iri irj iro irr irs is- isb ise isi isj iso isr iss j-i jbi jbj jbo jbr jbs jeb jee jei jej jeo jer jes jib jie jii jij jio jir jis jjb jjj jjr jjs job joe joi joj joo jor jos jrb jri jro jrr jrs jsb jse jsi jsj jso jsr jss o-i ob- obb obe obi obj obo obr obs oeb oee oei oeo oer oes oib oie oii oio oir ois ojb oje oji ojo ojs oo- oob ooi ooo oor oos or- orb ore ori oro orr ors os- osb ose osi osj oso osr oss rbb rbe rbi rbo rbr rbs re- reb ree rei reo rer res rib rie rii rio rir ris rjr rob roe roi roj roo ror ros rrb rri rrr rrs rsb rse rsi rsj rso rsr rss sbb sbe sbi sbj sbo sbr sbs se- seb see sei sej seo ser ses sib sie sii sij sio sir sis sjb sje sji sjj sjr sjs sob soe soi soj soo sor sos sr- srb sre sri srj sro srr srs ss- ssb sse ssi ssj sso ssr sss