bbb bbc bbe bbh bbk bbn bcb bcc bce bch bck bcn be- beb bec bee beh bek ben bhb bhc bhe bhh bhk bkb bkc bke bkk bkn bnb bnc bne bnk bnn c-- cbb cbc cbe cbh cbk cbn ccb ccc cce cch cck ccn ce- ceb cec cee ceh cek cen ch- chb chc che chh chk chn ckb ckc ckh cn- cnb cnc cne cnh cnn ebb ebc ebe ebh ebk ebn ec- ecb ecc ece ech eck ecn eeb eec eee eek een ehb ehc ehe ehh ehn ekb ekc eke ekh en- enb enc ene enh enk enn hbb hbc hbe hbh hbk hbn hcb hcc hce hch hck hcn he- heb hec hee heh hek hen hhb hhc hhe hhh hhk hhn hkb hkh hkk hkn hnb hnc hne hnh hnk hnn kbb kbc kbe kbh kbk kbn kcb kcc kce kch kck kcn ke- keb kec kee keh kek ken khe khh khk khn kkb kkc kke kkh kkk kkn kn- knc kne knk knn nbb nbc nbe nbk nbn ncb ncc nce nch nck ncn ne- neb nec nee neh nek nen nhb nhc nhe nhh nhk nhn nkc nke nkk nkn nnb nnc nne nnh nnk nnn