-er bbb bbd bbe bbh bbr bdb bdd bde bdh bdr be- beb bed bee beh ber bhb bhd bhe bhh bhr brb brd bre brh brr dbb dbd dbe dbh dbr ddb ddd dde ddh ddr de- deb ded dee deh der dh- dhb dhd dhe dhh dhr drb drd dre drr ebb ebd ebe ebh ebr ed- edb edd ede edh edr eeb eed eee eer ehb ehd ehe ehh ehr erb erd ere erh err hbb hbd hbe hbh hbr hdb hdd hde hdh hdr he- heb hed hee heh her hhb hhd hhe hhh hhr hr- hrb hrd hre hrh hrr rbb rbd rbe rbh rbr rdb rdd rde rdh rdr re- reb red ree reh rer rh- rhb rhd rhe rhh rhr rrb rrd rrh rrr