-er -ic bbb bbc bbd bbe bbf bbi bbk bbl bbr bcb bcc bcd bce bcf bci bck bcl bcr bdb bdc bdd bde bdf bdi bdk bdl bdr be- beb bec bed bee bef bei bek bel ber bfb bfc bfd bfe bff bfi bfl bfr bi- bib bic bid bie bif bii bik bil bir bkb bkc bke bkf bkk bkl bkr blb blc bld ble blf bli blk bll blr brb brd bre brf bri brk brl brr c-- cbb cbc cbd cbe cbf cbi cbk cbl cbr ccb ccc ccd cce ccf cci cck ccl ccr cdb cdc cdd cde cdf cdi cdk cdl cdr ce- ceb cec ced cee cef cei cek cel cer cfb cfc cfd cfe cff cfi cfk cfl cfr ci- cib cic cid cie cif cii cik cil cir ckb ckc ckd cki cl- clb clc cld cle clf cli clk cll clr crb crc crd cre crf cri crk crl crr dbb dbc dbd dbe dbf dbi dbk dbl dbr dcb dcc dcd dce dcf dci dck dcl dcr ddb ddc ddd dde ddf ddi ddk ddl ddr de- deb dec ded dee def dei dek del der dfb dfc dfd dfe dff dfi dfk dfl dfr di- dib dic did die dif dii dik dil dir dkb dkc dke dki dkk dkl dkr dl- dlb dlc dld dle dlf dli dlk dll dlr drb drc drd dre dri drk drl drr ebb ebc ebd ebe ebf ebi ebk ebl ebr ec- ecb ecc ecd ece ecf eci eck ecl ecr ed- edb edc edd ede edf edi edk edl edr eeb eec eed eee eef eek eel eer ef- efb efc efd efe eff efi efl efr eib eic eid eie eif eii eik eil eir ekb ekc ekd eke ekf eki ekl ekr elb elc eld ele elf eli elk ell elr erb erc erd ere erf eri erk erl err fbb fbc fbd fbe fbf fbi fbk fbl fbr fcb fcc fcd fce fcf fci fck fcl fcr fdb fdc fdd fde fdf fdi fdk fdl fdr feb fec fed fee fef fei fek fel fer ffc ffd ffe fff ffi ffk ffl ffr fib fic fid fie fif fii fik fil fir fkb fkc fkf fki fkk fkl flb flc fld fle flf fli fll flr frb frc frd fre frf fri frk frl frr i-d i-f ibb ibc ibd ibe ibf ibi ibk ibl ibr icb icc icd ice icf ici ick icl icr idb idc idd ide idf idi idk idl idr ie- iec ied iee ief iei iek iel ier ifb ifc ifd ife iff ifi ifl ifr iib iic iid iie iif iii iil iir ikb ikc ike ikf iki ikk ikl ikr il- ilb ilc ild ile ilf ili ilk ill ilr ir- irb irc ird ire irf iri irk irl irr kbb kbc kbd kbe kbf kbi kbk kbl kbr kcb kcc kcd kce kci kck kcl kcr kdb kdc kde kdf kdk kdl kdr ke- keb kec ked kee kef kei kek kel ker kfc kfd kff kfi kib kic kid kie kif kii kik kil kir kkb kkc kke kki kkk kkl kkr kl- klb klc kld klf kli klr krc krd krf kri krk krl krr lbb lbc lbd lbe lbf lbi lbk lbl lbr lcb lcc lcd lce lcf lci lck lcl lcr ldb ldc ldd lde ldf ldi ldk ldl ldr leb lec led lee lef lei lek lel ler lfb lfc lfd lfe lff lfi lfk lfl lfr lib lic lid lie lif lii lik lil lir lkb lkl lkr llb llc lld lle llf lli llk lll llr lrb lrc lrd lrf lri lrk lrr rbb rbc rbd rbe rbf rbi rbk rbl rbr rcb rcc rcd rce rcf rci rcl rcr rdb rdc rdd rde rdf rdi rdl rdr re- reb rec red ree ref rei rek rel rer rfb rfc rfd rfe rff rfi rfk rfl rfr rib ric rid rie rif rii rik ril rir rkb rkc rke rkf rkk rlc rld rle rlf rli rll rlr rrb rrc rrd rrf rri rrk rrl rrr