bbbb bbbs bmus bsms bssm bubb bubs bubu bukk buku bum- bumb bums busk buss busu buus kbbb kbbk kbbm kbbs kbbu kbkb kbkk kbmb kbms kbsb kbsk kbsm kbss kbsu kbub kbuk kbus kbuu kkbb kkbs kkkk kkmk kkms kksm kkss kksu kkus kkuu kmbs kmkk kmks kmmk kmmm kmms kmsb kmss kmsu kmus ksbs kskb kskk ksks ksku ksmb ksmm ksms ksmu kssm ksss kssu ksub ksum ksuu kubb kubs kubu kukk kuks kuku kumm kumu kusb kusu kuub kuuk kuuu mbbs mbms mbus mkks mksm mmmm mmms mmsu mmus msmb msmm msms msmu mssm msus mubs mumm mums mumu musk muss musu sbbs sbus skss skum smkb smss smus sssb sssm ssss sub- subb subm subs suks suku sum- sums sumu sus- susk suss susu suum suus ukum umb- umms umsu umus us-k usbs usmm usms ussb usss ussu usus uuuu