bbb bbi bbl bbm bbn bbs bbt bi- bib bii bil bim bin bis bit blb bli bll blm bln bls blt bmb bmi bml bmm bmn bms bmt bnb bni bnl bnn bns bnt bsb bsi bsl bsm bsn bss bst btb bti btl btm btn bts btt ibb ibi ibl ibm ibn ibs ibt iib iii iil iim iin iis iit il- ilb ili ill ilm iln ils ilt im- imb imi iml imm imn ims imt in- inb ini inl inm inn ins int is- isb isi isl ism isn iss ist itb iti itl itm itn its itt lbb lbi lbl lbm lbs lbt lib lii lil lim lin lis lit llb lli lll llm lln lls llt lmb lmi lml lmm lmn lms lmt lnb lni lnl lnm lnn lns lnt lsb lsi lsl lsm lsn lss lst ltb lti ltl ltm lts ltt mbb mbi mbl mbm mbs mbt mi- mib mii mil mim min mis mit mlb mli mll mlm mln mls mlt mmb mmi mml mmm mmn mms mmt mnb mni mnl mnm mnn mns mnt msb msi msl msm msn mss mst mtb mti mtl mtm mtn mts mtt n-i nbb nbi nbl nbm nbn nbs nbt nib nii nil nim nin nis nit nlb nli nll nlm nln nls nlt nmb nmi nml nmm nmn nms nmt nnb nni nnl nnm nnn nns nnt nsb nsi nsl nsm nsn nss nst ntb nti ntm ntn nts ntt sbb sbi sbl sbm sbn sbs sbt sib sii sil sim sin sis sit slb sli sll slm sln sls slt smb smi sml smm smn sms smt snb sni snl snm snn sns snt ss- ssb ssi ssl ssm ssn sss sst stb sti stl stm stn sts stt tbb tbi tbl tbm tbn tbs tbt tib tii til tim tin tis tit tli tll tlm tln tls tlt tmb tmi tml tmm tmn tms tmt tnb tni tnl tnm tnn tns tnt tsb tsi tsl tsm tsn tss tst ttb tti ttl ttm ttn tts ttt