-ey bbb bbe bbg bbk bbs bby be- beb bee beg bek bes bey bgb bge bgg bgk bgs bkb bke bkg bkk bks bsb bse bsg bsk bss bsy by- bye byg byk bys ebb ebe ebg ebk ebs eby eeb eee eeg eek ees eey egb ege egg egs egy ekb eke ekg eks eky es- esb ese esg esk ess esy eye eys gbe gbg gbk gbs gby ge- geb gee geg gek ges gey ggb ggg ggs gkb gks gsb gse gsg gsk gss gy- gyb gye gys kbb kbe kbk kbs ke- keb kee keg kek kes key kgb kgs kgy kkb kke kkk kks kky ksb kse ksg ksk kss kye kys sbb sbe sbg sbk sbs sby se- seb see seg sek ses sey sgb sge sgg sgk sgs sk- skb ske skg skk sks sky ss- ssb sse ssg ssk sss sy- syb sye syg syk sys ybe ybg ybs yby yeb yee yeg yek yes yey ykk ysb yse ysg ysk yss ysy yyb yye yyg yys yyy