bbb bbc bbd bbe bbh bbl bcb bcc bcd bce bch bcl bdb bdc bdd bde bdh bdl be- beb bec bed bee beh bel bhb bhc bhd bhe bhh bhl blb blc bld ble blh bll c-- cbb cbc cbd cbe cbh cbl ccb ccc ccd cce cch ccl cdb cdc cdd cde cdh cdl ce- ceb cec ced cee ceh cel ch- chb chc chd che chh chl cl- clb clc cld cle clh cll dbb dbc dbd dbe dbh dbl dcb dcc dcd dce dcl ddb ddc ddd dde ddh ddl de- deb dec ded dee deh del dh- dhb dhc dhd dhe dhh dhl dl- dlb dlc dld dle dlh dll ebb ebc ebd ebe ebh ebl ec- ecb ecc ecd ece ech ecl ed- edb edc edd ede edh edl eeb eec eed eee eel ehb ehc ehd ehe ehh ehl elb elc eld ele elh ell hbb hbc hbd hbe hbh hbl hcb hcc hcd hce hch hcl hdb hdc hdd hde hdh hdl he- heb hec hed hee heh hel hhb hhc hhd hhe hhh hhl hlb hlc hld hle hlh hll lbb lbc lbd lbe lbh lbl lcb lcc lcd lce lch lcl ldb ldc ldd lde ldh ldl leb lec led lee leh lel lhb lhc lhd lhh llb llc lld lle lll