-ic b-u bbb bbc bbe bbi bbl bbm bbt bbu bcb bcc bce bci bcl bcm bct bcu be- beb bec bee bei bel bem bet beu bi- bib bic bie bii bil bim bit biu blb blc ble bli bll blm blt blu bmb bmc bme bmi bml bmm bmt bmu btb btc bte bti btl btm btt btu bub buc bue bui bul bum but buu c-- cbb cbc cbe cbi cbl cbm cbt cbu ccb ccc cce cci ccl ccm cct ccu ce- ceb cec cee cei cel cem cet ceu ci- cib cic cie cii cil cim cit ciu cl- clb clc cle cli cll clm clt clu cmb cmc cme cmi cml cmm cmt cmu ctb ctc cte cti ctl ctm ctt ctu cub cuc cue cui cul cum cut cuu ebb ebc ebe ebi ebl ebm ebt ebu ec- ecb ecc ece eci ecl ecm ect ecu eeb eec eee eel eem eet eib eic eie eii eil eim eit eiu elb elc ele eli ell elm elt elu em- emb emc eme emi eml emm emt emu etb etc ete eti etl etm ett etu eu- eub euc eue eui eul eut ibb ibc ibe ibi ibl ibm ibt ibu icb icc ice ici icl icm ict icu ie- iec iee iei iel iem iet iib iic iie iii iil iim iit iiu il- ilb ilc ile ili ill ilm ilt ilu im- imb imc ime imi iml imm imt imu itb itc ite iti itl itm itt itu iu- iub iuc iue iui ium iut lbb lbc lbe lbi lbl lbm lbt lbu lcb lcc lce lci lcl lcm lct lcu leb lec lee lei lel lem let leu lib lic lie lii lil lim lit liu llb llc lle lli lll llm llt llu lmb lmc lme lmi lml lmm lmt lmu ltb ltc lte lti ltl ltm ltt ltu lub luc lue lui lul lum lut luu mbb mbc mbe mbi mbl mbm mbt mbu mc- mcb mcc mce mci mcl mcm mct mcu meb mec mee mei mel mem met meu mi- mib mic mie mii mil mim mit miu mlb mlc mle mli mll mlm mlt mlu mmb mmc mme mmi mml mmm mmt mmu mtb mtc mte mti mtl mtm mtt mtu mub muc mue mui mul mum mut muu tbb tbc tbe tbi tbl tbm tbt tbu tcb tcc tce tci tcl tcm tct tcu te- teb tec tee tei tel tem tet teu tib tic tie tii til tim tit tiu tlc tle tli tll tlm tlt tlu tmb tmc tme tmi tml tmm tmt tmu ttb ttc tte tti ttl ttm ttt ttu tub tuc tue tui tul tum tut tuu ubb ubc ube ubi ubl ubt ubu ucb ucc uce uci ucl ucm uct ucu ueb uec uee uei uel uem uet uib uic uie uii uil uim uit uiu ulb ulc ule uli ull ulm ult ulu um- umb umc ume umi uml umm umt umu utb utc ute uti utl utm utt utu uuc uue uum uut uuu