-er bbb bbd bbe bbf bbi bbk bbl bbr bdb bdd bde bdf bdi bdk bdl bdr be- beb bed bee bef bei bek bel ber bfb bfd bfe bff bfi bfl bfr bi- bib bid bie bif bii bik bil bir bkb bke bkf bkk bkl bkr blb bld ble blf bli blk bll blr brb brd bre brf bri brk brl brr dbb dbd dbe dbf dbi dbk dbl dbr ddb ddd dde ddf ddi ddk ddl ddr de- deb ded dee def dei dek del der dfb dfd dfe dff dfi dfk dfl dfr di- dib did die dif dii dik dil dir dkb dke dki dkk dkl dkr dl- dlb dld dle dlf dli dlk dll dlr drb drd dre dri drk drl drr ebb ebd ebe ebf ebi ebk ebl ebr ed- edb edd ede edf edi edk edl edr eeb eed eee eef eek eel eer ef- efb efd efe eff efi efl efr eib eid eie eif eii eik eil eir ekb ekd eke ekf eki ekl ekr elb eld ele elf eli elk ell elr erb erd ere erf eri erk erl err fbb fbd fbe fbf fbi fbk fbl fbr fdb fdd fde fdf fdi fdk fdl fdr feb fed fee fef fei fek fel fer ffd ffe fff ffi ffk ffl ffr fib fid fie fif fii fik fil fir fkb fkf fki fkk fkl flb fld fle flf fli fll flr frb frd fre frf fri frk frl frr i-d i-f ibb ibd ibe ibf ibi ibk ibl ibr idb idd ide idf idi idk idl idr ie- ied iee ief iei iek iel ier ifb ifd ife iff ifi ifl ifr iib iid iie iif iii iil iir ikb ike ikf iki ikk ikl ikr il- ilb ild ile ilf ili ilk ill ilr ir- irb ird ire irf iri irk irl irr kbb kbd kbe kbf kbi kbk kbl kbr kdb kde kdf kdk kdl kdr ke- keb ked kee kef kei kek kel ker kfd kff kfi kib kid kie kif kii kik kil kir kkb kke kki kkk kkl kkr kl- klb kld klf kli klr krd krf kri krk krl krr lbb lbd lbe lbf lbi lbk lbl lbr ldb ldd lde ldf ldi ldk ldl ldr leb led lee lef lei lek lel ler lfb lfd lfe lff lfi lfk lfl lfr lib lid lie lif lii lik lil lir lkb lkl lkr llb lld lle llf lli llk lll llr lrb lrd lrf lri lrk lrr rbb rbd rbe rbf rbi rbk rbl rbr rdb rdd rde rdf rdi rdl rdr re- reb red ree ref rei rek rel rer rfb rfd rfe rff rfi rfk rfl rfr rib rid rie rif rii rik ril rir rkb rke rkf rkk rld rle rlf rli rll rlr rrb rrd rrf rri rrk rrl rrr