-hou -ous bbbb bbbs bbhs bhhs bhuu bkhs bobb bobo bobs bobu boho bohs bohu boko boks boku boob booh book boos bosh bosk boso boss bosu bouh bouk bous bshs bsos bubb bubo bubs bubu buho buhs bukh bukk buko buku bush busk buss busu buus hbbs hbhs hbos hbss hhhh hhhs hhus hkbu hobo hobs hoho hoko hoks hoku hook hoos hosh hoss houk hshs hsob hubb hubo hubs huhs huhu huos hush husk huso huss huub huus k-os kbbb kbbk kbbo kbbs kbbu kbhb kbhh kbhs kbkb kbkk kbko kbob kbok kboo kbos kbsb kbsk kbso kbss kbsu kbub kbuk kbus kbuu khbs khhk khho khhs khkk khks khob khok khou khss khsu khub khuk khus kkbb kkbo kkbs kkhb kkhh kkhk kkkk kkob kkoh kkoo kkss kksu kkus kkuu kobb kobk kobo kobs kobu kohh koho kohs kohu kokb kokh kokk koko koks koku koob kook kooo koos koou kos- kosb kosh koso koss kosu koub kous kouu ksbh ksbs kshb kshk ksho kshs kshu kskb kskk ksko ksks ksku ksob ksok ksoo ksos ksou ksso ksss kssu ksub ksuh ksuu kubb kubo kubs kubu kuhs kuhu kukh kukk kuks kuku kuok kuoo kuos kusb kush kuso kusu kuub kuuk kuuu obbo obhs obkb obok obos obss obuh obus ohho ohhs ohob ohoh ohok ohos ohso ohss ohus okko okok okso okus ooho oohs ooku oooh oooo ooos oous osho oshs oshu osku osoo osos ossb osso ossu oubs ouu- s-os sbbs sbhk sbhs sbus shbs shhh shhs shok shoo shos shou shub shuk shus shuu skhs skss sobo sobs sobu sohh soho sohs sohu sokk soko soku sook soos sosh soso soss souk sous sshs sssb sssh ssss sub- subb subh subo subs suhb suho sukh suks suku suoh suos sus- susk suso suss susu suus ubbo ubos uhoh uhok uhss uhuh ukko ukok us-k usbs usho ushs ushu usos ussb usss ussu usus uuuu