-er -ji bbb bbe bbi bbo bbr bbt be- beb bee bei beo ber bet bi- bib bie bii bij bio bir bit bji bjj bjr bjt bob boe boi boj boo bor bot brb bre bri brj bro brr brt btb bte bti bto btr btt ebb ebe ebi ebj ebo ebr ebt eeb eee eeo eer eet eib eie eii eij eio eir eit eji ejo ejt eo- eob eoe eoi eoo eor eot erb ere eri ero err ert etb ete eti etj eto etr ett ibb ibe ibi ibj ibo ibr ibt ie- iee iei iej ier iet iib iie iii iij iio iir iit ijb ije iji ijo ijt io- iob ioe ioi ioj ioo ior iot ir- irb ire iri irj iro irr irt itb ite iti itj ito itt j-i jbi jbj jbo jbr jbt jeb jee jei jej jeo jer jet jib jie jii jij jio jir jit jjb jjj jjr job joe joi joj joo jor jot jrb jri jro jrr jrt jtb jte jti jtr jtt o-i ob- obb obe obi obj obo obr obt oeb oee oei oeo oer oet oib oie oii oio oir oit ojb oje oji ojo oo- oob ooi ooo oor oot or- orb ore ori oro orr ort ot- otb ote oti oto otr ott rbb rbe rbi rbo rbr rbt re- reb ree rei reo rer ret rib rie rii rio rir rit rjr rob roe roi roj roo ror rot rrb rri rrr rrt rtb rte rti rtj rto rtr rtt tbb tbe tbi tbj tbo tbr tbt te- teb tee tei tej teo ter tet tib tie tii tio tir tit tje tji tjo tjr to- tob toe toi toj too tor tot trb tre tri tro trr trt ttb tte tti tto ttr ttt