-er bbb bbc bbe bbh bbl bbn bbr bcb bcc bce bch bcl bcn bcr be- beb bec bee beh bel ben ber bhb bhc bhe bhh bhl bhr blb blc ble blh bll bln blr bnb bnc bne bnl bnn bnr brb bre brh brl brn brr c-- cbb cbc cbe cbh cbl cbn cbr ccb ccc cce cch ccl ccn ccr ce- ceb cec cee ceh cel cen cer ch- chb chc che chh chl chn chr cl- clb clc cle clh cll cln clr cn- cnb cnc cne cnh cnl cnn cnr crb crc cre crh crl crn crr ebb ebc ebe ebh ebl ebn ebr ec- ecb ecc ece ech ecl ecn ecr eeb eec eee eel een eer ehb ehc ehe ehh ehl ehn ehr elb elc ele elh ell eln elr en- enb enc ene enh enl enn enr erb erc ere erh erl ern err hbb hbc hbe hbh hbl hbn hbr hcb hcc hce hch hcl hcn hcr he- heb hec hee heh hel hen her hhb hhc hhe hhh hhl hhn hhr hlb hlc hle hlh hll hln hlr hnb hnc hne hnh hnl hnn hr- hrb hrc hre hrh hrl hrn hrr lbb lbc lbe lbh lbl lbr lcb lcc lce lch lcl lcn lcr leb lec lee leh lel len ler lhb lhc lhh lhr llb llc lle lll lln llr lnb lnc lne lnh lnl lnn lnr lrb lrc lrh lrn lrr nbb nbc nbe nbl nbn nbr ncb ncc nce nch ncl ncn ncr ne- neb nec nee neh nel nen ner nhb nhc nhe nhh nhl nhn nhr nlb nlc nle nlh nll nln nlr nnb nnc nne nnh nnl nnn nrb nrc nre nrl nrn nrr rbb rbc rbe rbh rbl rbn rbr rcb rcc rce rch rcl rcn rcr re- reb rec ree reh rel ren rer rh- rhb rhc rhe rhh rhl rhn rhr rlc rle rlh rll rln rlr rnb rnc rnh rnn rnr rrb rrc rrh rrl rrn rrr