-th bbb bbc bbe bbh bbl bbt bcb bcc bce bch bcl bct be- beb bec bee beh bel bet bhb bhc bhe bhh bhl bht blb blc ble blh bll blt btb btc bte bth btl btt c-- cbb cbc cbe cbh cbl cbt ccb ccc cce cch ccl cct ce- ceb cec cee ceh cel cet ch- chb chc che chh chl cht cl- clb clc cle clh cll clt ctb ctc cte cth ctl ctt ebb ebc ebe ebh ebl ebt ec- ecb ecc ece ech ecl ect eeb eec eee eel eet ehb ehc ehe ehh ehl eht elb elc ele elh ell elt etb etc ete eth etl ett hbb hbc hbe hbh hbl hbt hcb hcc hce hch hcl hct he- heb hec hee heh hel het hhb hhc hhe hhh hhl hht hlb hlc hle hlh hll hlt htb htc hte hth htl htt lbb lbc lbe lbh lbl lbt lcb lcc lce lch lcl lct leb lec lee leh lel let lhb lhc lhh lht llb llc lle lll llt ltb ltc lte lth ltl ltt tbb tbc tbe tbh tbl tbt tcb tcc tce tch tcl tct te- teb tec tee teh tel tet th- thb thc the thh thl tht tlc tle tlh tll tlt ttb ttc tte tth ttl ttt