bbb bbe bbg bbi bbm bbs be- beb bee beg bei bem bes bgb bge bgg bgi bgm bgs bi- bib bie big bii bim bis bmb bme bmg bmi bmm bms bsb bse bsg bsi bsm bss ebb ebe ebg ebi ebm ebs eeb eee eeg eem ees egb ege egg egi egm egs eib eie eig eii eim eis em- emb eme emg emi emm ems es- esb ese esg esi esm ess gbe gbg gbi gbm gbs ge- geb gee geg gei gem ges ggb ggg ggi ggm ggs gib gie gig gii gim gis gmb gme gmg gmi gmm gms gsb gse gsg gsi gsm gss ibb ibe ibg ibi ibm ibs ie- iee ieg iei iem ies igb ige igg igi igm igs iib iie iii iim iis im- imb ime img imi imm ims is- isb ise isg isi ism iss mbb mbe mbg mbi mbm mbs meb mee meg mei mem mes mgb mge mgi mgm mgs mi- mib mie mig mii mim mis mmb mme mmg mmi mmm mms msb mse msg msi msm mss sbb sbe sbg sbi sbm sbs se- seb see seg sei sem ses sgb sge sgg sgi sgm sgs sib sie sig sii sim sis smb sme smg smi smm sms ss- ssb sse ssg ssi ssm sss