-er -ji bbb bbd bbe bbi bbr bdb bdd bde bdi bdj bdr be- beb bed bee bei ber bi- bib bid bie bii bij bir bjd bji bjj bjr brb brd bre bri brj brr dbb dbd dbe dbi dbr ddb ddd dde ddi ddr de- deb ded dee dei dej der di- dib did die dii dir dj- djb djd dje dji drb drd dre dri drj drr ebb ebd ebe ebi ebj ebr ed- edb edd ede edi edj edr eeb eed eee eer eib eid eie eii eij eir ejd eji erb erd ere eri err i-d ibb ibd ibe ibi ibj ibr idb idd ide idi idr ie- ied iee iei iej ier iib iid iie iii iij iir ijb ije iji ir- irb ird ire iri irj irr j-d j-i jbi jbj jbr jdb jde jdi jdr jeb jed jee jei jej jer jib jie jii jij jir jjb jjj jjr jrb jri jrr rbb rbd rbe rbi rbr rdb rdd rde rdi rdj rdr re- reb red ree rei rer rib rid rie rii rir rjr rrb rrd rri rrr