-ic b-u bbb bbc bbe bbi bbl bbt bbu bcb bcc bce bci bcl bct bcu be- beb bec bee bei bel bet beu bi- bib bic bie bii bil bit biu blb blc ble bli bll blt blu btb btc bte bti btl btt btu bub buc bue bui bul but buu c-- cbb cbc cbe cbi cbl cbt cbu ccb ccc cce cci ccl cct ccu ce- ceb cec cee cei cel cet ceu ci- cib cic cie cii cil cit ciu cl- clb clc cle cli cll clt clu ctb ctc cte cti ctl ctt ctu cub cuc cue cui cul cut cuu ebb ebc ebe ebi ebl ebt ebu ec- ecb ecc ece eci ecl ect ecu eeb eec eee eel eet eib eic eie eii eil eit eiu elb elc ele eli ell elt elu etb etc ete eti etl ett etu eu- eub euc eue eui eul eut ibb ibc ibe ibi ibl ibt ibu icb icc ice ici icl ict icu ie- iec iee iei iel iet iib iic iie iii iil iit iiu il- ilb ilc ile ili ill ilt ilu itb itc ite iti itl itt itu iu- iub iuc iue iui iut lbb lbc lbe lbi lbl lbt lbu lcb lcc lce lci lcl lct lcu leb lec lee lei lel let leu lib lic lie lii lil lit liu llb llc lle lli lll llt llu ltb ltc lte lti ltl ltt ltu lub luc lue lui lul lut luu tbb tbc tbe tbi tbl tbt tbu tcb tcc tce tci tcl tct tcu te- teb tec tee tei tel tet teu tib tic tie tii til tit tiu tlc tle tli tll tlt tlu ttb ttc tte tti ttl ttt ttu tub tuc tue tui tul tut tuu ubb ubc ube ubi ubl ubt ubu ucb ucc uce uci ucl uct ucu ueb uec uee uei uel uet uib uic uie uii uil uit uiu ulb ulc ule uli ull ult ulu utb utc ute uti utl utt utu uuc uue uut uuu