hhh hhm hhn hho hhs hmh hmm hmo hms hnh hnn hno hns hoh hom hon hoo hos hsh hsm hsn hss m-o mhh mhm mhn mho mhs mmh mmm mmn mmo mms mnm mnn mno mns moh mom mon moo mos msh msm msn mso mss nhh nhm nhn nhs nmh nmm nmn nmo nms nnh nnm nnn nno nns no- noh nom non noo nos nsh nsm nsn nso nss ohh ohm ohn oho ohs om- omh omm omn omo oms on- onh onn ono ons oo- ooh oom oon ooo oos os- osh osm osn oso oss sh- shh shm shn sho shs smh smm smn smo sms snm snn sno sns soh som son soo sos ss- ssh ssm ssn sso sss