bbb bbc bbd bbe bbh bbk bcb bcc bcd bce bch bck bdb bdc bdd bde bdh bdk be- beb bec bed bee beh bek bhb bhc bhd bhe bhh bhk bkb bkc bke bkk c-- cbb cbc cbd cbe cbh cbk ccb ccc ccd cce cch cck cdb cdc cdd cde cdh cdk ce- ceb cec ced cee ceh cek ch- chb chc chd che chh chk ckb ckc ckd ckh dbb dbc dbd dbe dbh dbk dcb dcc dcd dce dck ddb ddc ddd dde ddh ddk de- deb dec ded dee deh dek dh- dhb dhc dhd dhe dhh dhk dkb dkc dke dkk ebb ebc ebd ebe ebh ebk ec- ecb ecc ecd ece ech eck ed- edb edc edd ede edh edk eeb eec eed eee eek ehb ehc ehd ehe ehh ekb ekc ekd eke ekh hbb hbc hbd hbe hbh hbk hcb hcc hcd hce hch hck hdb hdc hdd hde hdh hdk he- heb hec hed hee heh hek hhb hhc hhd hhe hhh hhk hkb hkd hkh hkk kbb kbc kbd kbe kbh kbk kcb kcc kcd kce kch kck kdb kdc kde kdh kdk ke- keb kec ked kee keh kek khe khh khk kkb kkc kke kkh kkk