-th bbb bbc bbh bbl bbm bbn bbt bcb bcc bch bcl bcm bcn bct bhb bhc bhh bhl bhm bht blb blc blh bll blm bln blt bmb bmc bmh bml bmm bmn bmt bnb bnc bnl bnn bnt btb btc bth btl btm btn btt c-- cbb cbc cbh cbl cbm cbn cbt ccb ccc cch ccl ccm ccn cct ch- chb chc chh chl chm chn cht cl- clb clc clh cll clm cln clt cmb cmc cmh cml cmm cmn cmt cn- cnb cnc cnh cnl cnm cnn cnt ctb ctc cth ctl ctm ctn ctt hbb hbc hbh hbl hbm hbn hbt hcb hcc hch hcl hcm hcn hct hhb hhc hhh hhl hhm hhn hht hlb hlc hlh hll hlm hln hlt hmb hmc hmh hml hmm hmt hnb hnc hnh hnl hnn hnt htb htc hth htl htm htn htt lbb lbc lbh lbl lbm lbt lcb lcc lch lcl lcm lcn lct lhb lhc lhh lht llb llc lll llm lln llt lmb lmc lmh lml lmm lmn lmt lnb lnc lnh lnl lnm lnn lnt ltb ltc lth ltl ltm ltt mbb mbc mbh mbl mbm mbt mc- mcb mcc mch mcl mcm mcn mct mhc mhh mhl mhm mhn mht mlb mlc mlh mll mlm mln mlt mmb mmc mmh mml mmm mmn mmt mnb mnc mnl mnm mnn mnt mtb mtc mth mtl mtm mtn mtt nbb nbc nbl nbm nbn nbt ncb ncc nch ncl ncm ncn nct nhb nhc nhh nhl nhm nhn nht nlb nlc nlh nll nlm nln nlt nmb nmc nmh nml nmm nmn nmt nnb nnc nnh nnl nnm nnn nnt ntb ntc nth ntm ntn ntt tbb tbc tbh tbl tbm tbn tbt tcb tcc tch tcl tcm tcn tct th- thb thc thh thl thm thn tht tlc tlh tll tlm tln tlt tmb tmc tmh tml tmm tmn tmt tnb tnc tnh tnl tnm tnn tnt ttb ttc tth ttl ttm ttn ttt