hhh hhk hhn hho hhs hkh hkk hkn hko hks hnh hnk hnn hno hns hoh hok hon hoo hos hsh hsk hsn hss khh khk khn kho khs kkh kkk kkn kks kn- knk knn kno koh kok kon koo kos ksh ksk ksn kso kss nhh nhk nhn nhs nkk nkn nko nks nnh nnk nnn nno nns no- noh nok non noo nos nsh nsk nsn nso nss ohh ohn oho ohs okk oko oks on- onh onk onn ono ons oo- ooh ook oon ooo oos os- osh osk osn oso oss sh- shh shk shn sho shs sk- skh skk sko sks snk snn sno sns soh sok son soo sos ss- ssh ssk ssn sso sss