bbb bbe bbh bbo bbs be- beb bee beh beo bes bhb bhe bhh bho bhs bob boe boh boo bos bsb bse bsh bso bss ebb ebe ebh ebo ebs eeb eee eeo ees ehb ehe ehh eho ehs eo- eob eoe eoh eoo eos es- esb ese esh eso ess hbb hbe hbh hbo hbs he- heb hee heh heo hes hhb hhe hhh hho hhs hob hoe hoh hoo hos hsb hse hsh hss ob- obb obe obh obo obs oeb oee oeh oeo oes ohe ohh oho ohs oo- oob ooh ooo oos os- osb ose osh oso oss sbb sbe sbh sbo sbs se- seb see seh seo ses sh- shb she shh sho shs sob soe soh soo sos ss- ssb sse ssh sso sss