bbb bbe bbg bbi bbn bbs bbt bbx be- beb bee beg bei ben bes bet bex bgb bge bgg bgi bgn bgs bgt bgx bi- bib bie big bii bin bis bit bix bnb bne bng bni bnn bns bnt bnx bsb bse bsg bsi bsn bss bst bsx btb bte btg bti btn bts btt btx bxb bxi bxn bxx ebb ebe ebg ebi ebn ebs ebt ebx eeb eee eeg een ees eet eex egb ege egg egi egn egs egt egx eib eie eig eii ein eis eit eix en- enb ene eng eni enn ens ent es- esb ese esg esi esn ess est esx etb ete etg eti etn ets ett etx ex- exe exi exs ext exx gbe gbg gbi gbn gbs gbt gbx ge- geb gee geg gei gen ges get gex ggb ggg ggi ggn ggs ggt gib gie gig gii gin gis git gnb gne gni gnn gns gnt gsb gse gsg gsi gsn gss gst gsx gtb gte gtg gti gtn gts gtt gtx gxs gxt ibb ibe ibg ibi ibn ibs ibt ibx ie- iee ieg iei ien ies iet iex igb ige igg igi ign igs igt iib iie iii iin iis iit iix in- inb ine ing ini inn ins int inx is- isb ise isg isi isn iss ist itb ite itg iti itn its itt itx ixe ixi ixn n-i nbb nbe nbg nbi nbn nbs nbt nbx ne- neb nee neg nei nen nes net nex ngb nge ngg ngi ngn ngs ngt nib nie nig nii nin nis nit nix nnb nne nng nni nnn nns nnt nsb nse nsg nsi nsn nss nst nsx ntb nte ntg nti ntn nts ntt ntx nxt sbb sbe sbg sbi sbn sbs sbt sbx se- seb see seg sei sen ses set sex sgb sge sgg sgi sgn sgs sgt sgx sib sie sig sii sin sis sit six snb sne sng sni snn sns snt ss- ssb sse ssg ssi ssn sss sst ssx stb ste stg sti stn sts stt stx sxi sxn sxs sxt t-x tbb tbe tbg tbi tbn tbs tbt te- teb tee teg tei ten tes tet tex tgb tge tgg tgi tgn tgs tgt tib tie tig tii tin tis tit tix tnb tne tng tni tnn tns tnt tnx tsb tse tsg tsi tsn tss tst tsx ttb tte ttg tti ttn tts ttt ttx txe txi txn txs txt xbe xbx xee xeg xen xes xet xex xge xgi xie xii xin xis xit xix xns xsb xsi xss xst xti xts xtx xxi xxx