bbb bbc bbe bbh bbl bbn bcb bcc bce bch bcl bcn be- beb bec bee beh bel ben bhb bhc bhe bhh bhl blb blc ble blh bll bln bnb bnc bne bnl bnn c-- cbb cbc cbe cbh cbl cbn ccb ccc cce cch ccl ccn ce- ceb cec cee ceh cel cen ch- chb chc che chh chl chn cl- clb clc cle clh cll cln cn- cnb cnc cne cnh cnl cnn ebb ebc ebe ebh ebl ebn ec- ecb ecc ece ech ecl ecn eeb eec eee eel een ehb ehc ehe ehh ehl ehn elb elc ele elh ell eln en- enb enc ene enh enl enn hbb hbc hbe hbh hbl hbn hcb hcc hce hch hcl hcn he- heb hec hee heh hel hen hhb hhc hhe hhh hhl hhn hlb hlc hle hlh hll hln hnb hnc hne hnh hnl hnn lbb lbc lbe lbh lbl lcb lcc lce lch lcl lcn leb lec lee leh lel len lhb lhc lhh llb llc lle lll lln lnb lnc lne lnh lnl lnn nbb nbc nbe nbl nbn ncb ncc nce nch ncl ncn ne- neb nec nee neh nel nen nhb nhc nhe nhh nhl nhn nlb nlc nle nlh nll nln nnb nnc nne nnh nnl nnn