bbbb bbbs bbhs bboy bbyo bhhs bhoy bkhs bobb bobo bobs boby boho bohs bohy boko boks boob booh book boos bosh bosk boso boss boyo boys bshs bsos byob byos bysb byso byss bysy hbbs hbhs hbos hbss hhhh hhhs hobo hobs hoby hoho hoko hoks hoky hook hoos hosh hoss hoys hshs hsob hybo hyo- k-os kbbb kbbk kbbo kbbs kbhb kbhh kbhs kbkb kbkk kbko kbky kbob kbok kboo kbos kbsb kbsk kbso kbss kbsy kbyb kbyo kbys khbs khhk khho khhs khkk khks khky khob khok khoy khss khys khyy kkbb kkbo kkbs kkhb kkhh kkhk kkkk kkob kkoh kkoo kkoy kkss kkys kkyy kobb kobk kobo kobs koby kohh koho kohs kokb kokh kokk koko koks koky koob kook kooo koos kos- kosb kosh koso koss kosy koyo koyy ksbh ksbs ksby kshb kshk ksho kshs kskb kskk ksko ksks ksky ksob ksok ksoo ksos ksso ksss ksyy kybb kybo kyby kykk kyks kyky kyok kyoo kyos kyoy kysk kyyk kyyo kyys kyyy obbo obby obhs obkb obok obos oboy obss ohho ohhs ohob ohoh ohok ohos ohso ohss ohyo okby okko okok okso okyo ooby ooho oohs ooky oooh oooo ooos osby osho oshs osoo osos ossb osso ossy oyss s-os sbbs sbhk sbhs shbs shhh shhs shok shoo shos skhs skss sky- skys skyy sobo sobs sohh soho sohs sokk soko sook soos sooy sosh soso soss soyo soys ssby sshs sssb sssh ssss sybo syso syss syyk ybbs ykko yobo yobs yoho yoko yoks yoky yook yosh yoso yoyo ysby yssh ysyb yyyy