bbb bbd bbe bbs bbw bdb bdd bde bds bdw be- beb bed bee bes bew bsb bsd bse bss bsw bwb bwd bws dbb dbd dbe dbs ddb ddd dde dds ddw de- deb ded dee des dew dsb dsd dse dss dsw dwb dwe dws dww ebb ebd ebe ebs ebw ed- edb edd ede eds edw eeb eed eee ees eew es- esb esd ese ess esw ewb ewd ewe ews eww sbb sbd sbe sbs sbw sdb sdd sde sds sdw se- seb sed see ses sew ss- ssb ssd sse sss ssw swb swd swe sws wbb wbd wbe wbs wbw wdb wds web wed wee wes wew wsb wsd wse wss wsw wwd wwe www