-er -ic b-u bbb bbc bbd bbe bbf bbi bbk bbl bbr bbs bbt bbu bcb bcc bcd bce bcf bci bck bcl bcr bcs bct bcu bdb bdc bdd bde bdf bdi bdk bdl bdr bds bdt bdu be- beb bec bed bee bef bei bek bel ber bes bet beu bfb bfc bfd bfe bff bfi bfl bfr bfs bft bfu bi- bib bic bid bie bif bii bik bil bir bis bit biu bkb bkc bke bkf bkk bkl bkr bks bkt blb blc bld ble blf bli blk bll blr bls blt blu brb brd bre brf bri brk brl brr brs brt bru bsb bsc bsd bse bsf bsi bsk bsl bsr bss bst bsu btb btc btd bte btf bti btk btl btr bts btt btu bub buc bud bue buf bui buk bul bur bus but buu c-- cbb cbc cbd cbe cbf cbi cbk cbl cbr cbs cbt cbu ccb ccc ccd cce ccf cci cck ccl ccr ccs cct ccu cdb cdc cdd cde cdf cdi cdk cdl cdr cds cdt cdu ce- ceb cec ced cee cef cei cek cel cer ces cet ceu cfb cfc cfd cfe cff cfi cfk cfl cfr cfs cft cfu ci- cib cic cid cie cif cii cik cil cir cis cit ciu ckb ckc ckd cki cks ckt cl- clb clc cld cle clf cli clk cll clr cls clt clu crb crc crd cre crf cri crk crl crr crs crt cru csb csc csd cse csf csi csk csl csr css cst csu ctb ctc ctd cte ctf cti ctk ctl ctr cts ctt ctu cub cuc cud cue cuf cui cuk cul cur cus cut cuu dbb dbc dbd dbe dbf dbi dbk dbl dbr dbs dbt dbu dcb dcc dcd dce dcf dci dck dcl dcr dcs dct dcu ddb ddc ddd dde ddf ddi ddk ddl ddr dds ddt ddu de- deb dec ded dee def dei dek del der des det deu dfb dfc dfd dfe dff dfi dfk dfl dfr dfs dft dfu di- dib dic did die dif dii dik dil dir dis dit diu dkb dkc dke dki dkk dkl dkr dks dkt dku dl- dlb dlc dld dle dlf dli dlk dll dlr dls dlt dlu drb drc drd dre dri drk drl drr drs drt dru dsb dsc dsd dse dsf dsi dsk dsl dsr dss dst dsu dtb dtc dtd dte dtf dti dtk dtl dtr dts dtt dtu dub duc dud due duf dui duk dul dur dus dut ebb ebc ebd ebe ebf ebi ebk ebl ebr ebs ebt ebu ec- ecb ecc ecd ece ecf eci eck ecl ecr ecs ect ecu ed- edb edc edd ede edf edi edk edl edr eds edt edu eeb eec eed eee eef eek eel eer ees eet ef- efb efc efd efe eff efi efl efr efs eft eib eic eid eie eif eii eik eil eir eis eit eiu ekb ekc ekd eke ekf eki ekl ekr eks ekt eku elb elc eld ele elf eli elk ell elr els elt elu erb erc erd ere erf eri erk erl err ers ert eru es- esb esc esd ese esf esi esk esl esr ess est esu etb etc etd ete etf eti etk etl etr ets ett etu eu- eub euc eud eue euf eui eul eur eus eut fbb fbc fbd fbe fbf fbi fbk fbl fbr fbs fbt fbu fcb fcc fcd fce fcf fci fck fcl fcr fcs fct fcu fdb fdc fdd fde fdf fdi fdk fdl fdr fds fdt fdu feb fec fed fee fef fei fek fel fer fes fet feu ffc ffd ffe fff ffi ffk ffl ffr ffs fft ffu fib fic fid fie fif fii fik fil fir fis fit fiu fkb fkc fkf fki fkk fkl fkt flb flc fld fle flf fli fll flr fls flt flu frb frc frd fre frf fri frk frl frr frs frt fru fsb fsc fsd fse fsf fsi fsk fsl fsr fss fst fsu ftb ftc ftd fte ftf fti ftk ftl ftr fts ftt ftu fub fud fue fuf fui fuk ful fur fus fut fuu i-d i-f ibb ibc ibd ibe ibf ibi ibk ibl ibr ibs ibt ibu icb icc icd ice icf ici ick icl icr ics ict icu idb idc idd ide idf idi idk idl idr ids idt idu ie- iec ied iee ief iei iek iel ier ies iet ifb ifc ifd ife iff ifi ifl ifr ifs ift ifu iib iic iid iie iif iii iil iir iis iit iiu ikb ikc ike ikf iki ikk ikl ikr iks ikt iku il- ilb ilc ild ile ilf ili ilk ill ilr ils ilt ilu ir- irb irc ird ire irf iri irk irl irr irs irt iru is- isb isc isd ise isf isi isk isl isr iss ist isu itb itc itd ite itf iti itk itl its itt itu iu- iub iuc iud iue iui iur ius iut k-t kbb kbc kbd kbe kbf kbi kbk kbl kbr kbs kbu kcb kcc kcd kce kci kck kcl kcr kcs kct kcu kdb kdc kde kdf kdk kdl kdr kds kdt kdu ke- keb kec ked kee kef kei kek kel ker kes ket kfc kfd kff kfi kfs kfu kib kic kid kie kif kii kik kil kir kis kit kiu kkb kkc kke kki kkk kkl kkr kks kkt kku kl- klb klc kld klf kli klr kls klt klu krc krd krf kri krk krl krr krs krt kru ksb ksc ksd kse ksf ksi ksk ksl ksr kss kst ksu ktb ktc kte ktf ktk ktl ktr kts ktt ktu kub kuc kud kue kui kuk kul kur kus kut kuu lbb lbc lbd lbe lbf lbi lbk lbl lbr lbs lbt lbu lcb lcc lcd lce lcf lci lck lcl lcr lcs lct lcu ldb ldc