-ic b-u bbb bbc bbe bbg bbi bbl bbu bcb bcc bce bcg bci bcl bcu be- beb bec bee beg bei bel beu bgb bgc bge bgg bgi bgl bgu bi- bib bic bie big bii bil biu blb blc ble blg bli bll blu bub buc bue bug bui bul buu c-- cbb cbc cbe cbg cbi cbl cbu ccb ccc cce ccg cci ccl ccu ce- ceb cec cee ceg cei cel ceu cgb cgc cge cgg cgi cgl cgu ci- cib cic cie cig cii cil ciu cl- clb clc cle clg cli cll clu cub cuc cue cug cui cul cuu ebb ebc ebe ebg ebi ebl ebu ec- ecb ecc ece ecg eci ecl ecu eeb eec eee eeg eel egb egc ege egg egi egl egu eib eic eie eig eii eil eiu elb elc ele elg eli ell elu eu- eub euc eue eug eui eul gbc gbe gbg gbi gbl gbu gcb gcc gce gcg gci gcl gcu ge- geb gec gee geg gei gel geu ggb ggc ggg ggi ggu gib gic gie gig gii gil giu glb glc gle glg gli gll glu gu- gub guc gue gug gui gul guu ibb ibc ibe ibg ibi ibl ibu icb icc ice icg ici icl icu ie- iec iee ieg iei iel igb igc ige igg igi igl igu iib iic iie iii iil iiu il- ilb ilc ile ilg ili ill ilu iu- iub iuc iue iug iui lbb lbc lbe lbg lbi lbl lbu lcb lcc lce lcg lci lcl lcu leb lec lee leg lei lel leu lgb lgc lge lgg lgi lgl lgu lib lic lie lig lii lil liu llb llc lle llg lli lll llu lub luc lue lug lui lul luu ubb ubc ube ubg ubi ubl ubu ucb ucc uce ucg uci ucl ucu ueb uec uee ueg uei uel ugb ugc uge ugg ugi ugl ugu uib uic uie uig uii uil uiu ulb ulc ule ulg uli ull ulu uuc uue uug uuu