-er -ic b-u bbb bbc bbd bbe bbi bbl bbm bbr bbs bbt bbu bcb bcc bcd bce bci bcl bcm bcr bcs bct bcu bdb bdc bdd bde bdi bdl bdm bdr bds bdt bdu be- beb bec bed bee bei bel bem ber bes bet beu bi- bib bic bid bie bii bil bim bir bis bit biu blb blc bld ble bli bll blm blr bls blt blu bmb bmc bmd bme bmi bml bmm bmr bms bmt bmu brb brd bre bri brl brm brr brs brt bru bsb bsc bsd bse bsi bsl bsm bsr bss bst bsu btb btc btd bte bti btl btm btr bts btt btu bub buc bud bue bui bul bum bur bus but buu c-- cbb cbc cbd cbe cbi cbl cbm cbr cbs cbt cbu ccb ccc ccd cce cci ccl ccm ccr ccs cct ccu cdb cdc cdd cde cdi cdl cdm cdr cds cdt cdu ce- ceb cec ced cee cei cel cem cer ces cet ceu ci- cib cic cid cie cii cil cim cir cis cit ciu cl- clb clc cld cle cli cll clm clr cls clt clu cmb cmc cmd cme cmi cml cmm cmr cms cmt cmu crb crc crd cre cri crl crm crr crs crt cru csb csc csd cse csi csl csm csr css cst csu ctb ctc ctd cte cti ctl ctm ctr cts ctt ctu cub cuc cud cue cui cul cum cur cus cut cuu dbb dbc dbd dbe dbi dbl dbm dbr dbs dbt dbu dcb dcc dcd dce dci dcl dcm dcr dcs dct dcu ddb ddc ddd dde ddi ddl ddm ddr dds ddt ddu de- deb dec ded dee dei del dem der des det deu di- dib dic did die dii dil dim dir dis dit diu dl- dlb dlc dld dle dli dll dlm dlr dls dlt dlu dmb dmc dmd dme dmi dml dmm dmr dms dmt dmu drb drc drd dre dri drl drm drr drs drt dru dsb dsc dsd dse dsi dsl dsm dsr dss dst dsu dtb dtc dtd dte dti dtl dtm dtr dts dtt dtu dub duc dud due dui dul dum dur dus dut ebb ebc ebd ebe ebi ebl ebm ebr ebs ebt ebu ec- ecb ecc ecd ece eci ecl ecm ecr ecs ect ecu ed- edb edc edd ede edi edl edm edr eds edt edu eeb eec eed eee eel eem eer ees eet eib eic eid eie eii eil eim eir eis eit eiu elb elc eld ele eli ell elm elr els elt elu em- emb emc emd eme emi eml emm emr ems emt emu erb erc erd ere eri erl erm err ers ert eru es- esb esc esd ese esi esl esm esr ess est esu etb etc etd ete eti etl etm etr ets ett etu eu- eub euc eud eue eui eul eur eus eut i-d ibb ibc ibd ibe ibi ibl ibm ibr ibs ibt ibu icb icc icd ice ici icl icm icr ics ict icu idb idc idd ide idi idl idm idr ids idt idu ie- iec ied iee iei iel iem ier ies iet iib iic iid iie iii iil iim iir iis iit iiu il- ilb ilc ild ile ili ill ilm ilr ils ilt ilu im- imb imc imd ime imi iml imm ims imt imu ir- irb irc ird ire iri irl irm irr irs irt iru is- isb isc isd ise isi isl ism isr iss ist isu itb itc itd ite iti itl itm its itt itu iu- iub iuc iud iue iui ium iur ius iut lbb lbc lbd lbe lbi lbl lbm lbr lbs lbt lbu lcb lcc lcd lce lci lcl lcm lcr lcs lct lcu ldb ldc ldd lde ldi ldl ldm ldr lds ldt ldu leb lec led lee lei lel lem ler les let leu lib lic lid lie lii lil lim lir lis lit liu llb llc lld lle lli lll llm llr lls llt llu lmb lmc lmd lme lmi lml lmm lmr lms lmt lmu lrb lrc lrd lri lrm lrr lrs lrt lru lsb lsc lsd lse lsi lsl lsm lsr lss lst lsu ltb ltc ltd lte lti ltl ltm ltr lts ltt ltu lub luc lud lue lui lul lum lur lus lut luu m-r mbb mbc mbd mbe mbi mbl mbm mbr mbs mbt mbu mc- mcb mcc mcd mce mci mcl mcm mcr mcs mct mcu mdb mdc mdd mde mdi mdl mdm mdr mds mdt mdu meb mec med mee mei mel mem mer mes met meu mi- mib mic mid mie mii mil mim mir mis mit miu mlb mlc mld mle mli mll mlm mlr mls mlt mlu mmb mmc mmd mme mmi mml mmm mmr mms mmt mmu mrb mrc mrd mre mri mrl mrm mrr mrs mrt mru msb msc msd mse msi msl msm msr mss mst msu mtb mtc mtd mte mti mtl mtm mtr mts mtt mtu mub muc mud mue mui mul mum mur mus mut muu rbb rbc rbd rbe rbi rbl rbm rbr rbs rbt rbu rcb rcc rcd rce rci rcl rcm rcr rcs rct rcu rdb rdc rdd rde rdi rdl rdm rdr rds rdt rdu re- reb rec red ree rei rel rem rer res ret reu rib ric rid rie rii ril rim rir ris rit rlc rld rle rli rll rlm rlr rls rlt rlu rmb rmc rmd rme rmi rml rmm rmr rms rmt rrb rrc rrd rri rrl rrm rrr rrs rrt rru rsb rsc rsd rse rsi rsl rsm rsr rss rst rsu rtb rtc rtd rte rti rtl rtm rtr rts rtt rtu rub ruc rud rue rui rum rur rus rut ruu sbb sbc sbd sbe sbi sbl sbm sbr sbs sbt sbu scb scc scd sce sci scl scm scr scs sct scu sdb