-er -ic b-u bbb bbc bbd bbe bbi bbl bbr bbt bbu bcb bcc bcd bce bci bcl bcr bct bcu bdb bdc bdd bde bdi bdl bdr bdt bdu be- beb bec bed bee bei bel ber bet beu bi- bib bic bid bie bii bil bir bit biu blb blc bld ble bli bll blr blt blu brb brd bre bri brl brr brt bru btb btc btd bte bti btl btr btt btu bub buc bud bue bui bul bur but buu c-- cbb cbc cbd cbe cbi cbl cbr cbt cbu ccb ccc ccd cce cci ccl ccr cct ccu cdb cdc cdd cde cdi cdl cdr cdt cdu ce- ceb cec ced cee cei cel cer cet ceu ci- cib cic cid cie cii cil cir cit ciu cl- clb clc cld cle cli cll clr clt clu crb crc crd cre cri crl crr crt cru ctb ctc ctd cte cti ctl ctr ctt ctu cub cuc cud cue cui cul cur cut cuu dbb dbc dbd dbe dbi dbl dbr dbt dbu dcb dcc dcd dce dci dcl dcr dct dcu ddb ddc ddd dde ddi ddl ddr ddt ddu de- deb dec ded dee dei del der det deu di- dib dic did die dii dil dir dit diu dl- dlb dlc dld dle dli dll dlr dlt dlu drb drc drd dre dri drl drr drt dru dtb dtc dtd dte dti dtl dtr dtt dtu dub duc dud due dui dul dur dut ebb ebc ebd ebe ebi ebl ebr ebt ebu ec- ecb ecc ecd ece eci ecl ecr ect ecu ed- edb edc edd ede edi edl edr edt edu eeb eec eed eee eel eer eet eib eic eid eie eii eil eir eit eiu elb elc eld ele eli ell elr elt elu erb erc erd ere eri erl err ert eru etb etc etd ete eti etl etr ett etu eu- eub euc eud eue eui eul eur eut i-d ibb ibc ibd ibe ibi ibl ibr ibt ibu icb icc icd ice ici icl icr ict icu idb idc idd ide idi idl idr idt idu ie- iec ied iee iei iel ier iet iib iic iid iie iii iil iir iit iiu il- ilb ilc ild ile ili ill ilr ilt ilu ir- irb irc ird ire iri irl irr irt iru itb itc itd ite iti itl itt itu iu- iub iuc iud iue iui iur iut lbb lbc lbd lbe lbi lbl lbr lbt lbu lcb lcc lcd lce lci lcl lcr lct lcu ldb ldc ldd lde ldi ldl ldr ldt ldu leb lec led lee lei lel ler let leu lib lic lid lie lii lil lir lit liu llb llc lld lle lli lll llr llt llu lrb lrc lrd lri lrr lrt lru ltb ltc ltd lte lti ltl ltr ltt ltu lub luc lud lue lui lul lur lut luu rbb rbc rbd rbe rbi rbl rbr rbt rbu rcb rcc rcd rce rci rcl rcr rct rcu rdb rdc rdd rde rdi rdl rdr rdt rdu re- reb rec red ree rei rel rer ret reu rib ric rid rie rii ril rir rit rlc rld rle rli rll rlr rlt rlu rrb rrc rrd rri rrl rrr rrt rru rtb rtc rtd rte rti rtl rtr rtt rtu rub ruc rud rue rui rur rut ruu tbb tbc tbd tbe tbi tbl tbr tbt tbu tcb tcc tcd tce tci tcl tcr tct tcu tdb tdc tdd tde tdi tdl tdr tdt tdu te- teb tec ted tee tei tel ter tet teu tib tic tid tie tii til tir tit tiu tlc tld tle tli tll tlr tlt tlu trb trc trd tre tri trl trr trt tru ttb ttc ttd tte tti ttl ttr ttt ttu tub tuc tud tue tui tul tur tut tuu ubb ubc ube ubi ubl ubr ubt ubu ucb ucc ucd uce uci ucl ucr uct ucu udb udc udd ude udi udl udr udt udu ueb uec ued uee uei uel uer uet uib uic uid uie uii uil uir uit uiu ulb ulc uld ule uli ull ulr ult ulu ur- urb urc urd ure uri url urr urt uru utb utc utd ute uti utl utr utt utu uuc uue uur uut uuu