a-a aaa aam aan aao aap aas ama amm amn amo amp ams an- ana anm ann ano anp ans aoa aom aon aoo aop aos ap- apa apm apn apo app aps as- asa asm asn aso asp ass m-o maa mam man mao map mas mma mmm mmn mmo mmp mms mna mnm mnn mno mnp mns moa mom mon moo mop mos mpa mpm mpn mpo mpp mps msa msm msn mso msp mss naa nam nan nao nap nas nma nmm nmn nmo nmp nms nna nnm nnn nno nnp nns no- noa nom non noo nop nos npa npm npn npo npp nps nsa nsm nsn nso nsp nss oaa oam oan oao oap oas om- oma omm omn omo omp oms on- ona onn ono onp ons oo- ooa oom oon ooo oop oos op- opa opm opn opo opp ops os- osa osm osn oso osp oss p-p paa pam pan pao pap pas pma pmm pmn pmo pmp pms pn- pna pnm pnn pno pnp pns poa pom pon poo pop pos ppa ppm ppn ppo ppp pps ps- psa psm psn pso psp pss saa sam san sao sap sas sma smm smn smo smp sms sna snm snn sno snp sns soa som son soo sop sos spa spm spn spo spp sps ss- ssa ssm ssn sso ssp sss