-er -ic b-u bbb bbc bbe bbi bbl bbm bbr bbu bcb bcc bce bci bcl bcm bcr bcu be- beb bec bee bei bel bem ber beu bi- bib bic bie bii bil bim bir biu blb blc ble bli bll blm blr blu bmb bmc bme bmi bml bmm bmr bmu brb bre bri brl brm brr bru bub buc bue bui bul bum bur buu c-- cbb cbc cbe cbi cbl cbm cbr cbu ccb ccc cce cci ccl ccm ccr ccu ce- ceb cec cee cei cel cem cer ceu ci- cib cic cie cii cil cim cir ciu cl- clb clc cle cli cll clm clr clu cmb cmc cme cmi cml cmm cmr cmu crb crc cre cri crl crm crr cru cub cuc cue cui cul cum cur cuu ebb ebc ebe ebi ebl ebm ebr ebu ec- ecb ecc ece eci ecl ecm ecr ecu eeb eec eee eel eem eer eib eic eie eii eil eim eir eiu elb elc ele eli ell elm elr elu em- emb emc eme emi eml emm emr emu erb erc ere eri erl erm err eru eu- eub euc eue eui eul eur ibb ibc ibe ibi ibl ibm ibr ibu icb icc ice ici icl icm icr icu ie- iec iee iei iel iem ier iib iic iie iii iil iim iir iiu il- ilb ilc ile ili ill ilm ilr ilu im- imb imc ime imi iml imm imu ir- irb irc ire iri irl irm irr iru iu- iub iuc iue iui ium iur lbb lbc lbe lbi lbl lbm lbr lbu lcb lcc lce lci lcl lcm lcr lcu leb lec lee lei lel lem ler leu lib lic lie lii lil lim lir liu llb llc lle lli lll llm llr llu lmb lmc lme lmi lml lmm lmr lmu lrb lrc lri lrm lrr lru lub luc lue lui lul lum lur luu m-r mbb mbc mbe mbi mbl mbm mbr mbu mc- mcb mcc mce mci mcl mcm mcr mcu meb mec mee mei mel mem mer meu mi- mib mic mie mii mil mim mir miu mlb mlc mle mli mll mlm mlr mlu mmb mmc mme mmi mml mmm mmr mmu mrb mrc mre mri mrl mrm mrr mru mub muc mue mui mul mum mur muu rbb rbc rbe rbi rbl rbm rbr rbu rcb rcc rce rci rcl rcm rcr rcu re- reb rec ree rei rel rem rer reu rib ric rie rii ril rim rir rlc rle rli rll rlm rlr rlu rmb rmc rme rmi rml rmm rmr rrb rrc rri rrl rrm rrr rru rub ruc rue rui rum rur ruu ubb ubc ube ubi ubl ubr ubu ucb ucc uce uci ucl ucm ucr ucu ueb uec uee uei uel uem uer uib uic uie uii uil uim uir uiu ulb ulc ule uli ull ulm ulr ulu um- umb umc ume umi uml umm umr umu ur- urb urc ure uri url urm urr uru uuc uue uum uur uuu