mmm mmn mmp mms mmt mnm mnn mnp mns mnt mpm mpn mpp mps mpt msm msn msp mss mst mtm mtn mtp mts mtt nmm nmn nmp nms nmt nnm nnn nnp nns nnt npm npn npp nps npt nsm nsn nsp nss nst ntm ntn ntp nts ntt p-p pmm pmn pmp pms pmt pn- pnm pnn pnp pns pnt ppm ppn ppp pps ppt ps- psm psn psp pss pst pt- ptm ptn ptp pts ptt smm smn smp sms smt snm snn snp sns snt spm spn spp sps spt ss- ssm ssn ssp sss sst stm stn stp sts stt tmm tmn tmp tms tmt tnm tnn tnp tns tnt tpm tpn tpp tps tpt tsm tsn tsp tss tst ttm ttn ttp tts ttt