a-a aaa aam aan aao aas ama amm amn amo ams an- ana anm ann ano ans aoa aom aon aoo aos as- asa asm asn aso ass m-o maa mam man mao mas mma mmm mmn mmo mms mna mnm mnn mno mns moa mom mon moo mos msa msm msn mso mss naa nam nan nao nas nma nmm nmn nmo nms nna nnm nnn nno nns no- noa nom non noo nos nsa nsm nsn nso nss oaa oam oan oao oas om- oma omm omn omo oms on- ona onn ono ons oo- ooa oom oon ooo oos os- osa osm osn oso oss saa sam san sao sas sma smm smn smo sms sna snm snn sno sns soa som son soo sos ss- ssa ssm ssn sso sss