bbb bbg bbl bbn bbr bbt bgb bgg bgl bgn bgr bgt bgz blb blg bll bln blr blt blz bnb bng bnl bnn bnr bnt bnz brb brg brl brn brr brt brz btb btg btl btn btr btt btz bzn bzr bzz gbg gbl gbn gbr gbt gbz ggb ggg ggn ggr ggt ggz glb glg gll gln glr glt glz gnb gnl gnn gnr gnt grb grg grl grn grr grt gtb gtg gtl gtn gtr gtt gzr lbb lbg lbl lbr lbt lgb lgg lgl lgn lgr lgt llb llg lll lln llr llt llz lnb lng lnl lnn lnr lnt lrb lrg lrn lrr lrt lrz ltb ltg ltl ltr ltt ltz lzr nbb nbg nbl nbn nbr nbt ngb ngg ngl ngn ngt nlb nlg nll nln nlr nlt nlz nnb nng nnl nnn nnt nnz nrb nrg nrl nrn nrr nrt nrz ntb ntg ntn ntr ntt ntz nzb nzg nzz rbb rbg rbl rbn rbr rbt rgb rgg rgn rgr rgt rlg rll rln rlr rlt rnb rng rnn rnr rnt rnz rrb rrg rrl rrn rrr rrt rtb rtg rtl rtn rtr rtt rtz rzb tbb tbg tbl tbn tbr tbt tbz tgb tgg tgl tgn tgr tgt tgz tlg tll tln tlr tlt tlz tnb tng tnl tnn tnr tnt tnz trb trg trl trn trr trt trz ttb ttg ttl ttn ttr ttt z-g zbb zbl zbr zbt zgb zgg zlr zlt znn zrl ztl ztr zzr zzt zzz