-er -ic b-u bbb bbc bbd bbe bbi bbl bbr bbu bcb bcc bcd bce bci bcl bcr bcu bdb bdc bdd bde bdi bdl bdr bdu be- beb bec bed bee bei bel ber beu bi- bib bic bid bie bii bil bir biu blb blc bld ble bli bll blr blu brb brd bre bri brl brr bru bub buc bud bue bui bul bur buu c-- cbb cbc cbd cbe cbi cbl cbr cbu ccb ccc ccd cce cci ccl ccr ccu cdb cdc cdd cde cdi cdl cdr cdu ce- ceb cec ced cee cei cel cer ceu ci- cib cic cid cie cii cil cir ciu cl- clb clc cld cle cli cll clr clu crb crc crd cre cri crl crr cru cub cuc cud cue cui cul cur cuu dbb dbc dbd dbe dbi dbl dbr dbu dcb dcc dcd dce dci dcl dcr dcu ddb ddc ddd dde ddi ddl ddr ddu de- deb dec ded dee dei del der deu di- dib dic did die dii dil dir diu dl- dlb dlc dld dle dli dll dlr dlu drb drc drd dre dri drl drr dru dub duc dud due dui dul dur ebb ebc ebd ebe ebi ebl ebr ebu ec- ecb ecc ecd ece eci ecl ecr ecu ed- edb edc edd ede edi edl edr edu eeb eec eed eee eel eer eib eic eid eie eii eil eir eiu elb elc eld ele eli ell elr elu erb erc erd ere eri erl err eru eu- eub euc eud eue eui eul eur i-d ibb ibc ibd ibe ibi ibl ibr ibu icb icc icd ice ici icl icr icu idb idc idd ide idi idl idr idu ie- iec ied iee iei iel ier iib iic iid iie iii iil iir iiu il- ilb ilc ild ile ili ill ilr ilu ir- irb irc ird ire iri irl irr iru iu- iub iuc iud iue iui iur lbb lbc lbd lbe lbi lbl lbr lbu lcb lcc lcd lce lci lcl lcr lcu ldb ldc ldd lde ldi ldl ldr ldu leb lec led lee lei lel ler leu lib lic lid lie lii lil lir liu llb llc lld lle lli lll llr llu lrb lrc lrd lri lrr lru lub luc lud lue lui lul lur luu rbb rbc rbd rbe rbi rbl rbr rbu rcb rcc rcd rce rci rcl rcr rcu rdb rdc rdd rde rdi rdl rdr rdu re- reb rec red ree rei rel rer reu rib ric rid rie rii ril rir rlc rld rle rli rll rlr rlu rrb rrc rrd rri rrl rrr rru rub ruc rud rue rui rur ruu ubb ubc ube ubi ubl ubr ubu ucb ucc ucd uce uci ucl ucr ucu udb udc udd ude udi udl udr udu ueb uec ued uee uei uel uer uib uic uid uie uii uil uir uiu ulb ulc uld ule uli ull ulr ulu ur- urb urc urd ure uri url urr uru uuc uue uur uuu