-er -ji bbb bbe bbi bbk bbr be- beb bee bei bek ber bev bi- bib bie bii bij bik bir biv bji bjj bjk bjr bkb bke bkk bkr bkv brb bre bri brj brk brr brv bvb bve bvi bvk bvr bvv ebb ebe ebi ebj ebk ebr ebv eeb eee eek eer eev eib eie eii eij eik eir eiv eji ekb eke eki ekr ekv erb ere eri erk err erv evb eve evi evr evv i-v ibb ibe ibi ibj ibk ibr ibv ie- iee iei iej iek ier iev iib iie iii iij iir ijb ije iji ijk ijv ikb ike iki ikk ikr ikv ir- irb ire iri irj irk irr irv ivb ive ivi ivr ivv j-i jbi jbj jbk jbr jeb jee jei jej jek jer jib jie jii jij jir jiv jjb jjj jjk jjr jkb jkk jkr jkv jrb jri jrk jrr jvb jvi kbb kbe kbi kbk kbr ke- keb kee kei kek ker kev kib kie kii kij kik kir kiv kjb kje kji kjr kkb kke kki kkk kkr kkv kri krk krr krv kvb kvi kvk kvr kvv rbb rbe rbi rbk rbr re- reb ree rei rek rer rev rib rie rii rik rir riv rjk rjr rkb rke rkk rkv rrb rri rrk rrr rvb rve rvi rvr rvv v-e vbi vbk vbr vbv veb vee vei vek ver vi- vib vie vii vij vik vir viv vkb vrb vre vri vrk vrr vvb vvi vvr vvv